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-rw-r--r--pkgs/tools/audio/abcm2ps/default.nix12
-rw-r--r--pkgs/tools/audio/abcmidi/default.nix11
-rw-r--r--pkgs/tools/audio/accuraterip-checksum/default.nix4
-rw-r--r--pkgs/tools/audio/acousticbrainz-client/default.nix41
-rw-r--r--pkgs/tools/audio/acoustid-fingerprinter/default.nix19
-rw-r--r--pkgs/tools/audio/acoustid-fingerprinter/ffmpeg.patch26
-rw-r--r--pkgs/tools/audio/alsaequal/default.nix8
-rw-r--r--pkgs/tools/audio/aucdtect/default.nix33
-rw-r--r--pkgs/tools/audio/audiowaveform/default.nix38
-rw-r--r--pkgs/tools/audio/beets/alternatives-plugin.nix25
-rw-r--r--pkgs/tools/audio/beets/badfiles-plugin-nix-paths.patch21
-rw-r--r--pkgs/tools/audio/beets/bash-completion-always-print.patch43
-rw-r--r--pkgs/tools/audio/beets/beet-check-tests.patch17
-rw-r--r--pkgs/tools/audio/beets/check-plugin.nix35
-rw-r--r--pkgs/tools/audio/beets/compatibility-with-breaking-changes-to-the-ast-module.patch55
-rw-r--r--pkgs/tools/audio/beets/convert-plugin-ffmpeg-path.patch43
-rw-r--r--pkgs/tools/audio/beets/default.nix243
-rw-r--r--pkgs/tools/audio/beets/keyfinder-default-bin.patch20
-rw-r--r--pkgs/tools/audio/beets/mutagen-1.43.patch29
-rw-r--r--pkgs/tools/audio/beets/plugins/alternatives.nix32
-rw-r--r--pkgs/tools/audio/beets/plugins/copyartifacts.nix (renamed from pkgs/tools/audio/beets/copyartifacts-plugin.nix)13
-rw-r--r--pkgs/tools/audio/beets/plugins/extrafiles.nix32
-rw-r--r--pkgs/tools/audio/beets/replaygain-default-bs1770gain.patch17
-rw-r--r--pkgs/tools/audio/beets/replaygain-default-ffmpeg.patch26
-rw-r--r--pkgs/tools/audio/botamusique/default.nix155
-rw-r--r--pkgs/tools/audio/botamusique/no-runtime-update.patch12
-rw-r--r--pkgs/tools/audio/botamusique/node-packages.nix5237
-rw-r--r--pkgs/tools/audio/botamusique/src.json10
-rw-r--r--pkgs/tools/audio/botamusique/unconditional-relative-state-paths.patch22
-rw-r--r--pkgs/tools/audio/bpm-tools/default.nix22
-rw-r--r--pkgs/tools/audio/darkice/default.nix12
-rw-r--r--pkgs/tools/audio/dir2opus/default.nix4
-rw-r--r--pkgs/tools/audio/essentia-extractor/default.nix10
-rw-r--r--pkgs/tools/audio/ezstream/default.nix8
-rw-r--r--pkgs/tools/audio/glyr/default.nix8
-rw-r--r--pkgs/tools/audio/google-music-scripts/default.nix59
-rw-r--r--pkgs/tools/audio/gvolicon/default.nix12
-rw-r--r--pkgs/tools/audio/isrcsubmit/default.nix24
-rw-r--r--pkgs/tools/audio/kaldi/default.nix88
-rw-r--r--pkgs/tools/audio/liquidsoap/full.nix34
-rw-r--r--pkgs/tools/audio/midicsv/default.nix10
-rw-r--r--pkgs/tools/audio/mididings/default.nix10
-rw-r--r--pkgs/tools/audio/mp3cat/default.nix4
-rw-r--r--pkgs/tools/audio/mpd-mpris/default.nix12
-rw-r--r--pkgs/tools/audio/mpdas/default.nix14
-rw-r--r--pkgs/tools/audio/mpdcron/default.nix54
-rw-r--r--pkgs/tools/audio/mpdcron/gemset.nix2
-rw-r--r--pkgs/tools/audio/mpdris2/default.nix4
-rw-r--r--pkgs/tools/audio/mpris-scrobbler/default.nix60
-rw-r--r--pkgs/tools/audio/opl3bankeditor/0001-opl3bankeditor-Look-for-system-installed-Rt-libs.patch200
-rw-r--r--pkgs/tools/audio/opl3bankeditor/0001-opn2bankeditor-Look-for-system-installed-Rt-libs.patch200
-rw-r--r--pkgs/tools/audio/opl3bankeditor/common.nix69
-rw-r--r--pkgs/tools/audio/opl3bankeditor/default.nix30
-rw-r--r--pkgs/tools/audio/opl3bankeditor/opn2bankeditor.nix21
-rw-r--r--pkgs/tools/audio/pa-applet/default.nix9
-rw-r--r--pkgs/tools/audio/pasystray/default.nix18
-rw-r--r--pkgs/tools/audio/patray/default.nix43
-rw-r--r--pkgs/tools/audio/picotts/default.nix10
-rw-r--r--pkgs/tools/audio/playerctl/default.nix10
-rw-r--r--pkgs/tools/audio/pnmixer/default.nix8
-rw-r--r--pkgs/tools/audio/pulsemixer/default.nix4
-rw-r--r--pkgs/tools/audio/qastools/default.nix8
-rw-r--r--pkgs/tools/audio/spotdl/default.nix52
-rw-r--r--pkgs/tools/audio/stt/default.nix34
-rw-r--r--pkgs/tools/audio/trx/default.nix6
-rw-r--r--pkgs/tools/audio/tts/default.nix121
-rw-r--r--pkgs/tools/audio/video2midi/default.nix6
-rw-r--r--pkgs/tools/audio/volctl/default.nix48
-rw-r--r--pkgs/tools/audio/volumeicon/default.nix8
-rw-r--r--pkgs/tools/audio/yabridge/default.nix146
-rw-r--r--pkgs/tools/audio/yabridge/hardcode-wine.patch13
-rw-r--r--pkgs/tools/audio/yabridgectl/default.nix39
-rw-r--r--pkgs/tools/audio/yabridgectl/libyabridge-from-nix-profiles.patch70
73 files changed, 7252 insertions, 651 deletions
diff --git a/pkgs/tools/audio/abcm2ps/default.nix b/pkgs/tools/audio/abcm2ps/default.nix
index 099ccc6f4cb..b94d514e8ec 100644
--- a/pkgs/tools/audio/abcm2ps/default.nix
+++ b/pkgs/tools/audio/abcm2ps/default.nix
@@ -1,14 +1,14 @@
-{ stdenv, fetchFromGitHub, pkgconfig, which, docutils, freetype, pango }:
+{ lib, stdenv, fetchFromGitHub, pkg-config, which, docutils, freetype, pango }:
 
 stdenv.mkDerivation rec {
   pname = "abcm2ps";
-  version = "8.14.9";
+  version = "8.14.12";
 
   src = fetchFromGitHub {
     owner = "leesavide";
     repo = "abcm2ps";
     rev = "v${version}";
-    sha256 = "0h4qzj9k5ng09nbkfipvr82piq68c576akjwmhsqn05rvgirmhx7";
+    sha256 = "sha256-RELWtI+S2cbG7cXCehXymvWRdair28UaDZRVr5xt9Tk=";
   };
 
   configureFlags = [
@@ -19,13 +19,13 @@ stdenv.mkDerivation rec {
     "CC=${stdenv.cc}/bin/cc"
   ];
 
-  nativeBuildInputs = [ which pkgconfig docutils ];
+  nativeBuildInputs = [ which pkg-config docutils ];
 
   buildInputs = [ freetype pango ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "http://moinejf.free.fr/";
-    license = licenses.gpl3;
+    license = licenses.lgpl3Plus;
     description = "A command line program which converts ABC to music sheet in PostScript or SVG format";
     platforms = platforms.unix;
     maintainers = [ maintainers.dotlambda ];
diff --git a/pkgs/tools/audio/abcmidi/default.nix b/pkgs/tools/audio/abcmidi/default.nix
index f075f503ae5..16c6e0fc8a0 100644
--- a/pkgs/tools/audio/abcmidi/default.nix
+++ b/pkgs/tools/audio/abcmidi/default.nix
@@ -1,18 +1,15 @@
-{ stdenv, fetchzip }:
+{ lib, stdenv, fetchzip }:
 
 stdenv.mkDerivation rec {
   pname = "abcMIDI";
-  version = "2020.07.28";
+  version = "2021.06.27";
 
   src = fetchzip {
     url = "https://ifdo.ca/~seymour/runabc/${pname}-${version}.zip";
-    sha256 = "05nsakvnx1jz2k9bvabpw5v3js28ng9z7n6ch58brd3qxc2p76zv";
+    sha256 = "sha256-tLKxs1p1CIU/2XV1fMgWrwdtePeXOBZUMjz46kgp9C0=";
   };
 
-  # There is also a file called "makefile" which seems to be preferred by the standard build phase
-  makefile = "Makefile";
-
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "http://abc.sourceforge.net/abcMIDI/";
     downloadPage = "https://ifdo.ca/~seymour/runabc/top.html";
     license = licenses.gpl2Plus;
diff --git a/pkgs/tools/audio/accuraterip-checksum/default.nix b/pkgs/tools/audio/accuraterip-checksum/default.nix
index efd44025647..161e9848bea 100644
--- a/pkgs/tools/audio/accuraterip-checksum/default.nix
+++ b/pkgs/tools/audio/accuraterip-checksum/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, libsndfile }:
+{ lib, stdenv, fetchFromGitHub, libsndfile }:
 
 stdenv.mkDerivation rec {
   pname = "accuraterip-checksum";
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Program for computing the AccurateRip checksum of singletrack WAV files";
     homepage = "https://github.com/leo-bogert/accuraterip-checksum";
     license = licenses.gpl3;
diff --git a/pkgs/tools/audio/acousticbrainz-client/default.nix b/pkgs/tools/audio/acousticbrainz-client/default.nix
new file mode 100644
index 00000000000..a08710fe121
--- /dev/null
+++ b/pkgs/tools/audio/acousticbrainz-client/default.nix
@@ -0,0 +1,41 @@
+{ lib, fetchFromGitHub, python3Packages, essentia-extractor }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "acousticbrainz-client";
+  version = "0.1";
+
+  src = fetchFromGitHub {
+    owner = "MTG";
+    repo = "acousticbrainz-client";
+    rev = version;
+    sha256 = "1g1nxh58939vysfxplrgdz366dlqnic05pkzbqh75m79brg4yrv1";
+  };
+
+  propagatedBuildInputs = [ essentia-extractor python3Packages.requests ];
+
+  postPatch = ''
+    # The installer needs the streaming_extractor_music binary in the source directoy,
+    # so we provide a symlink to it.
+    ln -s ${essentia-extractor}/bin/streaming_extractor_music streaming_extractor_music
+  '';
+
+  postInstall = ''
+    # The installer includes a copy of the streaming_extractor_music binary (not a symlink),
+    # which we don't need, because the wrapper adds essentia-extractor/binary to PATH.
+    rm $out/bin/streaming_extractor_music
+  '';
+
+  # Tests seem to be broken, but the tool works
+  doCheck = false;
+
+  pythonImportsCheck = [ "abz" ];
+
+  meta = with lib; {
+    description = "A client to upload data to an AcousticBrainz server";
+    license = licenses.gpl3Plus;
+    homepage = "https://github.com/MTG/acousticbrainz-client";
+    # essentia-extractor is only available for those platforms
+    platforms = [ "x86_64-linux" "i686-linux" ];
+    maintainers = with maintainers; [ eduardosm ];
+  };
+}
diff --git a/pkgs/tools/audio/acoustid-fingerprinter/default.nix b/pkgs/tools/audio/acoustid-fingerprinter/default.nix
index e2824bc07b6..4fc3d957e13 100644
--- a/pkgs/tools/audio/acoustid-fingerprinter/default.nix
+++ b/pkgs/tools/audio/acoustid-fingerprinter/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchpatch, cmake, pkgconfig, qt4, taglib, chromaprint, ffmpeg }:
+{ lib, stdenv, fetchurl, fetchpatch, cmake, pkg-config, qt4, taglib, chromaprint, ffmpeg }:
 
 stdenv.mkDerivation rec {
   pname = "acoustid-fingerprinter";
@@ -10,23 +10,28 @@ stdenv.mkDerivation rec {
     sha256 = "0ckglwy95qgqvl2l6yd8ilwpd6qs7yzmj8g7lnxb50d12115s5n0";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ cmake qt4 taglib chromaprint ffmpeg ];
+  nativeBuildInputs = [ cmake pkg-config ];
+  buildInputs = [ qt4 taglib chromaprint ffmpeg ];
 
-  cmakeFlags = [ "-DTAGLIB_MIN_VERSION=${stdenv.lib.getVersion taglib}" ];
+  cmakeFlags = [ "-DTAGLIB_MIN_VERSION=${lib.getVersion taglib}" ];
 
   patches = [
     (fetchpatch {
+      name = "fix-build-with-libav-10.patch";
+      url = "https://bitbucket.org/acoustid/acoustid-fingerprinter/commits/2c778334a9fc2f0ccf9b1d7635c116bce6509748/raw";
+      sha256 = "1smyp3x5n6jwxpgw60xsijq2fn6g1gl759h1lm5agaxhcyyqn0i0";
+    })
+    (fetchpatch {
+      name = "fix-build-failure-on-gcc-6.patch";
       url = "https://bitbucket.org/acoustid/acoustid-fingerprinter/commits/632e87969c3a5562a5d4842b03613267ba6236b2/raw";
       sha256 = "15hm9knrpqn3yqrwyjz4zh2aypwbcycd0c5svrsy1fb2h2rh05jk";
     })
-    ./ffmpeg.patch
   ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "https://acoustid.org/fingerprinter";
     description = "Audio fingerprinting tool using chromaprint";
-    license = stdenv.lib.licenses.gpl2Plus;
+    license = lib.licenses.gpl2Plus;
     maintainers = with maintainers; [ ehmry ];
     platforms = with platforms; linux;
   };
diff --git a/pkgs/tools/audio/acoustid-fingerprinter/ffmpeg.patch b/pkgs/tools/audio/acoustid-fingerprinter/ffmpeg.patch
deleted file mode 100644
index f3eacae26f7..00000000000
--- a/pkgs/tools/audio/acoustid-fingerprinter/ffmpeg.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-diff --git a/decoder.h b/decoder.h
-index 028f58f..4428ac1 100644
---- a/decoder.h
-+++ b/decoder.h
-@@ -39,6 +39,8 @@ extern "C" {
- #define AV_SAMPLE_FMT_S16 SAMPLE_FMT_S16
- #endif
- 
-+#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000
-+
- class Decoder
- {
- public:
-diff --git a/ffmpeg/audioconvert.h b/ffmpeg/audioconvert.h
-index 2b28e2e..a699986 100644
---- a/ffmpeg/audioconvert.h
-+++ b/ffmpeg/audioconvert.h
-@@ -79,7 +79,7 @@ int avcodec_channel_layout_num_channels(int64_t channel_layout);
-  * @param fmt_name Format name, or NULL if unknown
-  * @return Channel layout mask
-  */
--uint64_t avcodec_guess_channel_layout(int nb_channels, enum CodecID codec_id, const char *fmt_name);
-+uint64_t avcodec_guess_channel_layout(int nb_channels, enum AVCodecID codec_id, const char *fmt_name);
- 
- struct AVAudioConvert;
- typedef struct AVAudioConvert AVAudioConvert;
diff --git a/pkgs/tools/audio/alsaequal/default.nix b/pkgs/tools/audio/alsaequal/default.nix
index 9498baca991..c6c25fd3996 100644
--- a/pkgs/tools/audio/alsaequal/default.nix
+++ b/pkgs/tools/audio/alsaequal/default.nix
@@ -1,5 +1,5 @@
-{ stdenv, fetchurl
-, alsaLib, caps
+{ lib, stdenv, fetchurl
+, alsa-lib, caps
 }:
 
 stdenv.mkDerivation rec {
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "1w3g9q5z3nrn3mwdhaq6zsg0jila8d102dgwgrhj9vfx58apsvli";
   };
 
-  buildInputs = [ alsaLib ];
+  buildInputs = [ alsa-lib ];
 
   makeFlags = [ "DESTDIR=$(out)" ];
 
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
     mkdir -p "$out/lib/alsa-lib"
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Real-time adjustable equalizer plugin for ALSA";
     homepage = "https://thedigitalmachine.net/alsaequal.html";
     license = licenses.gpl2;
diff --git a/pkgs/tools/audio/aucdtect/default.nix b/pkgs/tools/audio/aucdtect/default.nix
deleted file mode 100644
index ad9d5fb8690..00000000000
--- a/pkgs/tools/audio/aucdtect/default.nix
+++ /dev/null
@@ -1,33 +0,0 @@
-{ stdenv, fetchurl, lib, rpmextract }:
-
-with lib;
-
-stdenv.mkDerivation rec {
-  pname = "aucdtect";
-  version = "0.8-2";
-
-  src = fetchurl {
-    url = "http://www.true-audio.com/ftp/${pname}-${version}.i586.rpm";
-    sha256 = "1lp5f0rq5b5n5il0c64m00gcfskarvgqslpryms9443d200y6mmd";
-  };
-
-  unpackCmd = "${rpmextract}/bin/rpmextract $src";
-
-  installPhase = ''
-    runHook preInstall
-
-    install -Dm755 local/bin/auCDtect $out/bin/aucdtect
-
-    runHook postInstall
-  '';
-
-  dontStrip = true;
-
-  meta = with stdenv.lib; {
-    description = "Verify authenticity of lossless audio files";
-    homepage = "http://tausoft.org";
-    license = licenses.unfreeRedistributable;
-    maintainers = with maintainers; [ peterhoeg ];
-    platforms = platforms.linux;
-  };
-}
diff --git a/pkgs/tools/audio/audiowaveform/default.nix b/pkgs/tools/audio/audiowaveform/default.nix
new file mode 100644
index 00000000000..e120f6fcbf0
--- /dev/null
+++ b/pkgs/tools/audio/audiowaveform/default.nix
@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchFromGitHub, cmake, gtest, boost, gd, libsndfile, libmad, libid3tag }:
+
+stdenv.mkDerivation rec {
+  pname = "audiowaveform";
+  version = "1.4.2";
+
+  src = fetchFromGitHub {
+    owner = "bbc";
+    repo = "audiowaveform";
+    rev = version;
+    sha256 = "0k2s2f2hgq4pnjzfkgvjwgsflihmzdq7shicfjn0z2mzw4d1bvp2";
+  };
+
+  nativeBuildInputs = [ cmake gtest ];
+
+  buildInputs = [ boost gd libsndfile libmad libid3tag ];
+
+  preConfigure = ''
+    ln -s ${gtest.src}/googletest googletest
+    ln -s ${gtest.src}/googlemock googlemock
+  '';
+
+  # One test is failing, see PR #101947
+  doCheck = false;
+
+  meta = with lib; {
+    description = "C++ program to generate waveform data and render waveform images from audio files";
+    longDescription = ''
+      audiowaveform is a C++ command-line application that generates waveform data from either MP3, WAV, FLAC, or Ogg Vorbis format audio files.
+      Waveform data can be used to produce a visual rendering of the audio, similar in appearance to audio editing applications.
+    '';
+    homepage = "https://github.com/bbc/audiowaveform";
+    changelog = "https://github.com/bbc/audiowaveform/blob/${version}/ChangeLog";
+    license = licenses.gpl3Plus;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ edbentley ];
+  };
+}
diff --git a/pkgs/tools/audio/beets/alternatives-plugin.nix b/pkgs/tools/audio/beets/alternatives-plugin.nix
deleted file mode 100644
index fdad7dd8984..00000000000
--- a/pkgs/tools/audio/beets/alternatives-plugin.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-{ stdenv, fetchFromGitHub, beets, pythonPackages }:
-
-pythonPackages.buildPythonApplication rec {
-  pname = "beets-alternatives";
-  version = "0.9.0";
-
-  src = fetchFromGitHub {
-    repo = "beets-alternatives";
-    owner = "geigerzaehler";
-    # This is 0.8.2 with fixes against Beets 1.4.6 and Python 3 compatibility.
-    rev = "v${version}";
-    sha256 = "19160gwg5j6asy8mc21g2kf87mx4zs9x2gbk8q4r6330z4kpl5pm";
-  };
-
-  nativeBuildInputs = [ beets pythonPackages.nose ];
-
-  checkPhase = "nosetests";
-
-  meta = {
-    description = "Beets plugin to manage external files";
-    homepage = "https://github.com/geigerzaehler/beets-alternatives";
-    maintainers = [ stdenv.lib.maintainers.aszlig ];
-    license = stdenv.lib.licenses.mit;
-  };
-}
diff --git a/pkgs/tools/audio/beets/badfiles-plugin-nix-paths.patch b/pkgs/tools/audio/beets/badfiles-plugin-nix-paths.patch
new file mode 100644
index 00000000000..6956183344c
--- /dev/null
+++ b/pkgs/tools/audio/beets/badfiles-plugin-nix-paths.patch
@@ -0,0 +1,21 @@
+diff --git i/beetsplug/badfiles.py w/beetsplug/badfiles.py
+index 36b45de3..5208b696 100644
+--- i/beetsplug/badfiles.py
++++ w/beetsplug/badfiles.py
+@@ -71,14 +71,14 @@ class BadFiles(BeetsPlugin):
+         return status, errors, [line for line in output.split("\n") if line]
+ 
+     def check_mp3val(self, path):
+-        status, errors, output = self.run_command(["mp3val", path])
++        status, errors, output = self.run_command(["@mp3val@/bin/mp3val", path])
+         if status == 0:
+             output = [line for line in output if line.startswith("WARNING:")]
+             errors = len(output)
+         return status, errors, output
+ 
+     def check_flac(self, path):
+-        return self.run_command(["flac", "-wst", path])
++        return self.run_command(["@flac@/bin/flac", "-wst", path])
+ 
+     def check_custom(self, command):
+         def checker(path):
diff --git a/pkgs/tools/audio/beets/bash-completion-always-print.patch b/pkgs/tools/audio/beets/bash-completion-always-print.patch
new file mode 100644
index 00000000000..7bc3e57117e
--- /dev/null
+++ b/pkgs/tools/audio/beets/bash-completion-always-print.patch
@@ -0,0 +1,43 @@
+diff --git i/beets/ui/commands.py w/beets/ui/commands.py
+index 4d010f4b..0b023585 100755
+--- i/beets/ui/commands.py
++++ w/beets/ui/commands.py
+@@ -1741,20 +1741,6 @@ default_commands.append(config_cmd)
+ def print_completion(*args):
+     for line in completion_script(default_commands + plugins.commands()):
+         print_(line, end=u'')
+-    if not any(map(os.path.isfile, BASH_COMPLETION_PATHS)):
+-        log.warning(u'Warning: Unable to find the bash-completion package. '
+-                    u'Command line completion might not work.')
+-
+-BASH_COMPLETION_PATHS = map(syspath, [
+-    u'/etc/bash_completion',
+-    u'/usr/share/bash-completion/bash_completion',
+-    u'/usr/local/share/bash-completion/bash_completion',
+-    # SmartOS
+-    u'/opt/local/share/bash-completion/bash_completion',
+-    # Homebrew (before bash-completion2)
+-    u'/usr/local/etc/bash_completion',
+-])
+-
+ 
+ def completion_script(commands):
+     """Yield the full completion shell script as strings.
+diff --git i/test/test_ui.py w/test/test_ui.py
+index 5cfed1fd..9d3dc458 100644
+--- i/test/test_ui.py
++++ w/test/test_ui.py
+@@ -1230,12 +1230,7 @@ class CompletionTest(_common.TestCase, TestHelper):
+                                   stdout=subprocess.PIPE, env=env)
+ 
+         # Load bash_completion library.
+-        for path in commands.BASH_COMPLETION_PATHS:
+-            if os.path.exists(util.syspath(path)):
+-                bash_completion = path
+-                break
+-        else:
+-            self.skipTest(u'bash-completion script not found')
++        self.skipTest(u'bash-completion script not found')
+         try:
+             with open(util.syspath(bash_completion), 'rb') as f:
+                 tester.stdin.writelines(f)
diff --git a/pkgs/tools/audio/beets/beet-check-tests.patch b/pkgs/tools/audio/beets/beet-check-tests.patch
deleted file mode 100644
index 2de97b86c8b..00000000000
--- a/pkgs/tools/audio/beets/beet-check-tests.patch
+++ /dev/null
@@ -1,17 +0,0 @@
-diff --git a/test/cli_test.py b/test/cli_test.py
-index 26df140..2eb913c 100644
---- a/test/cli_test.py
-+++ b/test/cli_test.py
-@@ -372,12 +372,6 @@ class ToolListTest(TestHelper, TestCase):
-         self.assertIn('flac', stdout.getvalue())
-         self.assertIn('oggz-validate', stdout.getvalue())
- 
--    def test_found_mp3val(self):
--        shutil.copy('/bin/echo', os.path.join(self.temp_dir, 'mp3val'))
--        with captureStdout() as stdout:
--            beets.ui._raw_main(['check', '--list-tools'])
--        self.assertRegexpMatches(stdout.getvalue(), r'mp3val *found')
--
-     def test_oggz_validate_not_found(self):
-         with captureStdout() as stdout:
-             beets.ui._raw_main(['check', '--list-tools'])
diff --git a/pkgs/tools/audio/beets/check-plugin.nix b/pkgs/tools/audio/beets/check-plugin.nix
deleted file mode 100644
index 241dcdad452..00000000000
--- a/pkgs/tools/audio/beets/check-plugin.nix
+++ /dev/null
@@ -1,35 +0,0 @@
-{ stdenv, fetchFromGitHub, beets, pythonPackages, flac, liboggz, mp3val }:
-
-pythonPackages.buildPythonApplication rec {
-  name = "beets-check";
-  version = "0.12.0";
-
-  src = fetchFromGitHub {
-    repo = "beets-check";
-    owner = "geigerzaehler";
-    rev = "v${version}";
-    sha256 = "0b2ijjf0gycs6b40sm33ida3sjygjiv4spb5mba52vysc7iwmnjn";
-  };
-
-  nativeBuildInputs = [ beets ];
-  checkInputs = [ pythonPackages.nose flac liboggz mp3val ];
-  propagatedBuildInputs = [ flac liboggz mp3val ];
-
-  # patch out broken tests
-  patches = [ ./beet-check-tests.patch ];
-
-  # patch out futures dependency, it is only needed for Python2 which we don't
-  # support.
-  prePatch = ''
-    sed -i "/futures/d" setup.py
-  '';
-
-  checkPhase = "nosetests";
-
-  meta = with stdenv.lib; {
-    description = "Beets plugin to Verify and store checksums in your library";
-    homepage = "https://github.com/geigerzaehler/beets-check";
-    license = licenses.mit;
-    maintainers = with maintainers; [ lovesegfault ];
-  };
-}
diff --git a/pkgs/tools/audio/beets/compatibility-with-breaking-changes-to-the-ast-module.patch b/pkgs/tools/audio/beets/compatibility-with-breaking-changes-to-the-ast-module.patch
deleted file mode 100644
index 4865b6f6234..00000000000
--- a/pkgs/tools/audio/beets/compatibility-with-breaking-changes-to-the-ast-module.patch
+++ /dev/null
@@ -1,55 +0,0 @@
-From 771ce704ebeac4cd9bd74b3ddde9fb01f3dc7eb4 Mon Sep 17 00:00:00 2001
-From: wisp3rwind <17089248+wisp3rwind@users.noreply.github.com>
-Date: Tue, 9 Jun 2020 19:34:31 +0200
-Subject: [PATCH] compatibility with breaking changes to the ast module
-
-new in 3.10, also backported to 3.8 and 3.9: https://github.com/python/cpython/pull/20649
-In fact, our generation of some Literals has been invalid since Python
-3.4, fix that too.
----
- beets/util/functemplate.py | 29 ++++++++++++++++++++---------
- 1 file changed, 20 insertions(+), 9 deletions(-)
-
-diff --git a/beets/util/functemplate.py b/beets/util/functemplate.py
-index af22b790..266534a9 100644
---- a/beets/util/functemplate.py
-+++ b/beets/util/functemplate.py
-@@ -73,15 +73,26 @@ def ex_literal(val):
-     """An int, float, long, bool, string, or None literal with the given
-     value.
-     """
--    if val is None:
--        return ast.Name('None', ast.Load())
--    elif isinstance(val, six.integer_types):
--        return ast.Num(val)
--    elif isinstance(val, bool):
--        return ast.Name(bytes(val), ast.Load())
--    elif isinstance(val, six.string_types):
--        return ast.Str(val)
--    raise TypeError(u'no literal for {0}'.format(type(val)))
-+    if sys.version_info[:2] < (3, 4):
-+        if val is None:
-+            return ast.Name('None', ast.Load())
-+        elif isinstance(val, six.integer_types):
-+            return ast.Num(val)
-+        elif isinstance(val, bool):
-+            return ast.Name(bytes(val), ast.Load())
-+        elif isinstance(val, six.string_types):
-+            return ast.Str(val)
-+        raise TypeError(u'no literal for {0}'.format(type(val)))
-+    elif sys.version_info[:2] < (3, 6):
-+        if val in [None, True, False]:
-+            return ast.NameConstant(val)
-+        elif isinstance(val, six.integer_types):
-+            return ast.Num(val)
-+        elif isinstance(val, six.string_types):
-+            return ast.Str(val)
-+        raise TypeError(u'no literal for {0}'.format(type(val)))
-+    else:
-+        return ast.Constant(val)
- 
- 
- def ex_varassign(name, expr):
--- 
-2.27.0
-
diff --git a/pkgs/tools/audio/beets/convert-plugin-ffmpeg-path.patch b/pkgs/tools/audio/beets/convert-plugin-ffmpeg-path.patch
new file mode 100644
index 00000000000..bcc77179d79
--- /dev/null
+++ b/pkgs/tools/audio/beets/convert-plugin-ffmpeg-path.patch
@@ -0,0 +1,43 @@
+diff --git i/beetsplug/convert.py w/beetsplug/convert.py
+index 70363f6e..2962aa4f 100644
+--- i/beetsplug/convert.py
++++ w/beetsplug/convert.py
+@@ -81,7 +81,7 @@ def get_format(fmt=None):
+         command = config['convert']['command'].as_str()
+     elif 'opts' in keys:
+         # Undocumented option for backwards compatibility with < 1.3.1.
+-        command = u'ffmpeg -i $source -y {0} $dest'.format(
++        command = u'@ffmpeg@/bin/ffmpeg -i $source -y {0} $dest'.format(
+             config['convert']['opts'].as_str()
+         )
+     if 'extension' in keys:
+@@ -121,22 +121,22 @@ class ConvertPlugin(BeetsPlugin):
+             u'id3v23': u'inherit',
+             u'formats': {
+                 u'aac': {
+-                    u'command': u'ffmpeg -i $source -y -vn -acodec aac '
++                    u'command': u'@ffmpeg@/bin/ffmpeg -i $source -y -vn -acodec aac '
+                                 u'-aq 1 $dest',
+                     u'extension': u'm4a',
+                 },
+                 u'alac': {
+-                    u'command': u'ffmpeg -i $source -y -vn -acodec alac $dest',
++                    u'command': u'@ffmpeg@/bin/ffmpeg -i $source -y -vn -acodec alac $dest',
+                     u'extension': u'm4a',
+                 },
+-                u'flac': u'ffmpeg -i $source -y -vn -acodec flac $dest',
+-                u'mp3': u'ffmpeg -i $source -y -vn -aq 2 $dest',
++                u'flac': u'@ffmpeg@/bin/ffmpeg -i $source -y -vn -acodec flac $dest',
++                u'mp3': u'@ffmpeg@/bin/ffmpeg -i $source -y -vn -aq 2 $dest',
+                 u'opus':
+-                    u'ffmpeg -i $source -y -vn -acodec libopus -ab 96k $dest',
++                    u'@ffmpeg@/bin/ffmpeg -i $source -y -vn -acodec libopus -ab 96k $dest',
+                 u'ogg':
+-                    u'ffmpeg -i $source -y -vn -acodec libvorbis -aq 3 $dest',
++                    u'@ffmpeg@/bin/ffmpeg -i $source -y -vn -acodec libvorbis -aq 3 $dest',
+                 u'wma':
+-                    u'ffmpeg -i $source -y -vn -acodec wmav2 -vn $dest',
++                    u'@ffmpeg@/bin/ffmpeg -i $source -y -vn -acodec wmav2 -vn $dest',
+             },
+             u'max_bitrate': 500,
+             u'auto': False,
diff --git a/pkgs/tools/audio/beets/default.nix b/pkgs/tools/audio/beets/default.nix
index 776eca99998..059174ae0a2 100644
--- a/pkgs/tools/audio/beets/default.nix
+++ b/pkgs/tools/audio/beets/default.nix
@@ -1,126 +1,117 @@
-{ stdenv, fetchFromGitHub, writeScript, glibcLocales, diffPlugins
+{ stdenv, lib, fetchFromGitHub, writeScript, glibcLocales, diffPlugins, substituteAll
 , pythonPackages, imagemagick, gobject-introspection, gst_all_1
-, runtimeShell
-, fetchpatch
-
-# Attributes needed for tests of the external plugins
-, callPackage, beets
-
-, enableAbsubmit       ? stdenv.lib.elem stdenv.hostPlatform.system essentia-extractor.meta.platforms, essentia-extractor ? null
-, enableAcousticbrainz ? true
-, enableAcoustid       ? true
-, enableBadfiles       ? true, flac ? null, mp3val ? null
-, enableConvert        ? true, ffmpeg_3 ? null
-, enableDiscogs        ? true
-, enableEmbyupdate     ? true
-, enableFetchart       ? true
-, enableGmusic         ? true
-, enableKeyfinder      ? true, keyfinder-cli ? null
-, enableKodiupdate     ? true
-, enableLastfm         ? true
-, enableLoadext        ? true
-, enableMpd            ? true
-, enablePlaylist       ? true
-, enableReplaygain     ? true, bs1770gain ? null
-, enableSonosUpdate    ? true
-, enableSubsonicupdate ? true
-, enableThumbnails     ? true
-, enableWeb            ? true
+, runtimeShell, unstableGitUpdater
+
+# external plugins package set
+, beetsExternalPlugins
+
+, enableAbsubmit         ? lib.elem stdenv.hostPlatform.system essentia-extractor.meta.platforms, essentia-extractor
+, enableAcousticbrainz   ? true
+, enableAcoustid         ? true
+, enableAura             ? true
+, enableBadfiles         ? true, flac, mp3val
+, enableBeatport         ? true
+, enableBpsync           ? true
+, enableConvert          ? true, ffmpeg
+, enableDeezer           ? true
+, enableDiscogs          ? true
+, enableEmbyupdate       ? true
+, enableFetchart         ? true
+, enableKeyfinder        ? true, keyfinder-cli
+, enableKodiupdate       ? true
+, enableLastfm           ? true
+, enableLoadext          ? true
+, enableLyrics           ? true
+, enableMpd              ? true
+, enablePlaylist         ? true
+, enableReplaygain       ? true
+, enableSonosUpdate      ? true
+, enableSubsonicplaylist ? true
+, enableSubsonicupdate   ? true
+, enableThumbnails       ? true
+, enableWeb              ? true
 
 # External plugins
-, enableAlternatives   ? false
-, enableCheck          ? false, liboggz ? null
-, enableCopyArtifacts  ? false
+, enableAlternatives     ? false
+, enableCopyArtifacts    ? false
+, enableExtraFiles       ? false
 
 , bashInteractive, bash-completion
 }:
 
-assert enableAbsubmit    -> essentia-extractor            != null;
-assert enableAcoustid    -> pythonPackages.pyacoustid     != null;
-assert enableBadfiles    -> flac != null && mp3val != null;
-assert enableCheck       -> flac != null && mp3val != null && liboggz != null;
-assert enableConvert     -> ffmpeg_3 != null;
-assert enableDiscogs     -> pythonPackages.discogs_client != null;
-assert enableFetchart    -> pythonPackages.responses      != null;
-assert enableGmusic      -> pythonPackages.gmusicapi      != null;
-assert enableKeyfinder   -> keyfinder-cli != null;
-assert enableLastfm      -> pythonPackages.pylast         != null;
-assert enableMpd         -> pythonPackages.mpd2           != null;
-assert enableReplaygain  -> bs1770gain                    != null;
-assert enableSonosUpdate -> pythonPackages.soco           != null;
-assert enableThumbnails  -> pythonPackages.pyxdg          != null;
-assert enableWeb         -> pythonPackages.flask          != null;
-
-with stdenv.lib;
+assert enableBpsync      -> enableBeatport;
 
 let
   optionalPlugins = {
     absubmit = enableAbsubmit;
     acousticbrainz = enableAcousticbrainz;
+    aura = enableAura;
     badfiles = enableBadfiles;
+    beatport = enableBeatport;
+    bpsync = enableBpsync;
     chroma = enableAcoustid;
     convert = enableConvert;
+    deezer = enableDeezer;
     discogs = enableDiscogs;
     embyupdate = enableEmbyupdate;
     fetchart = enableFetchart;
-    gmusic = enableGmusic;
     keyfinder = enableKeyfinder;
     kodiupdate = enableKodiupdate;
     lastgenre = enableLastfm;
     lastimport = enableLastfm;
     loadext = enableLoadext;
+    lyrics = enableLyrics;
     mpdstats = enableMpd;
     mpdupdate = enableMpd;
     playlist = enablePlaylist;
     replaygain = enableReplaygain;
     sonosupdate = enableSonosUpdate;
+    subsonicplaylist = enableSubsonicplaylist;
     subsonicupdate = enableSubsonicupdate;
     thumbnails = enableThumbnails;
     web = enableWeb;
   };
 
   pluginsWithoutDeps = [
-    "beatport" "bench" "bpd" "bpm" "bucket" "cue" "duplicates" "edit" "embedart"
-    "export" "filefilter" "freedesktop" "fromfilename" "ftintitle" "fuzzy"
-    "hook" "ihate" "importadded" "importfeeds" "info" "inline" "ipfs" "lyrics"
-    "mbcollection" "mbsubmit" "mbsync" "metasync" "missing" "permissions" "play"
+    "bareasc" "bench" "bpd" "bpm" "bucket" "duplicates" "edit" "embedart"
+    "export" "filefilter" "fish" "freedesktop" "fromfilename" "ftintitle" "fuzzy"
+    "hook" "ihate" "importadded" "importfeeds" "info" "inline" "ipfs"
+    "mbcollection" "mbsubmit" "mbsync" "metasync" "missing" "parentwork" "permissions" "play"
     "plexupdate" "random" "rewrite" "scrub" "smartplaylist" "spotify" "the"
-    "types" "zero"
+    "types" "unimported" "zero"
   ];
 
-  enabledOptionalPlugins = attrNames (filterAttrs (_: id) optionalPlugins);
+  enabledOptionalPlugins = lib.attrNames (lib.filterAttrs (_: lib.id) optionalPlugins);
 
-  allPlugins = pluginsWithoutDeps ++ attrNames optionalPlugins;
+  allPlugins = pluginsWithoutDeps ++ lib.attrNames optionalPlugins;
   allEnabledPlugins = pluginsWithoutDeps ++ enabledOptionalPlugins;
 
   testShell = "${bashInteractive}/bin/bash --norc";
   completion = "${bash-completion}/share/bash-completion/bash_completion";
 
   # This is a stripped down beets for testing of the external plugins.
-  externalTestArgs.beets = (beets.override {
+  externalTestArgs.beets = (lib.beets.override {
     enableAlternatives = false;
     enableCopyArtifacts = false;
-  }).overrideAttrs (stdenv.lib.const {
+    enableExtraFiles = false;
+  }).overrideAttrs (lib.const {
     doInstallCheck = false;
   });
 
-  pluginArgs = externalTestArgs // { inherit pythonPackages; };
-
-  plugins = {
-    alternatives = callPackage ./alternatives-plugin.nix pluginArgs;
-    check = callPackage ./check-plugin.nix pluginArgs;
-    copyartifacts = callPackage ./copyartifacts-plugin.nix pluginArgs;
-  };
-
 in pythonPackages.buildPythonApplication rec {
   pname = "beets";
-  version = "1.4.9";
+  # While there is a stable version, 1.4.9, it is more than 1000 commits behind
+  # master and lacks many bug fixes and improvements[1]. Also important,
+  # unstable does not require bs1770gain[2].
+  # [1]: https://discourse.beets.io/t/forming-a-beets-core-team/639
+  # [2]: https://github.com/NixOS/nixpkgs/pull/90504
+  version = "unstable-2021-05-13";
 
   src = fetchFromGitHub {
     owner = "beetbox";
     repo = "beets";
-    rev = "v${version}";
-    sha256 = "1qxdqbzvz97zgykzdwn78g2xyxmg0q2jdb12dnjnrwvhmjv67vi8";
+    rev = "1faa41f8c558d3f4415e5e48cf4513d50b466d34";
+    sha256 = "sha256-P0bV7WNqCYe9+3lqnFmAoRlb2asdsBUjzRMc24RngpU=";
   };
 
   propagatedBuildInputs = [
@@ -134,29 +125,36 @@ in pythonPackages.buildPythonApplication rec {
     pythonPackages.unidecode
     pythonPackages.gst-python
     pythonPackages.pygobject3
+    pythonPackages.reflink
+    pythonPackages.confuse
+    pythonPackages.mediafile
     gobject-introspection
-  ] ++ optional enableAbsubmit      essentia-extractor
-    ++ optional enableAcoustid      pythonPackages.pyacoustid
-    ++ optional (enableFetchart
-              || enableEmbyupdate
-              || enableKodiupdate
-              || enableLoadext
-              || enablePlaylist
-              || enableSubsonicupdate
-              || enableAcousticbrainz)
-                                    pythonPackages.requests
-    ++ optional enableCheck         plugins.check
-    ++ optional enableConvert       ffmpeg_3
-    ++ optional enableDiscogs       pythonPackages.discogs_client
-    ++ optional enableGmusic        pythonPackages.gmusicapi
-    ++ optional enableKeyfinder     keyfinder-cli
-    ++ optional enableLastfm        pythonPackages.pylast
-    ++ optional enableMpd           pythonPackages.mpd2
-    ++ optional enableSonosUpdate   pythonPackages.soco
-    ++ optional enableThumbnails    pythonPackages.pyxdg
-    ++ optional enableWeb           pythonPackages.flask
-    ++ optional enableAlternatives  plugins.alternatives
-    ++ optional enableCopyArtifacts plugins.copyartifacts;
+  ] ++ lib.optional enableAbsubmit         essentia-extractor
+    ++ lib.optional enableAcoustid         pythonPackages.pyacoustid
+    ++ lib.optional enableBeatport         pythonPackages.requests_oauthlib
+    ++ lib.optional enableConvert          ffmpeg
+    ++ lib.optional enableDiscogs          pythonPackages.discogs-client
+    ++ lib.optional (enableFetchart
+                  || enableDeezer
+                  || enableEmbyupdate
+                  || enableKodiupdate
+                  || enableLoadext
+                  || enablePlaylist
+                  || enableSubsonicplaylist
+                  || enableSubsonicupdate
+                  || enableAcousticbrainz) pythonPackages.requests
+    ++ lib.optional enableKeyfinder        keyfinder-cli
+    ++ lib.optional enableLastfm           pythonPackages.pylast
+    ++ lib.optional enableLyrics           pythonPackages.beautifulsoup4
+    ++ lib.optional enableMpd              pythonPackages.mpd2
+    ++ lib.optional enableSonosUpdate      pythonPackages.soco
+    ++ lib.optional enableThumbnails       pythonPackages.pyxdg
+    ++ lib.optional (enableAura
+                  || enableWeb)            pythonPackages.flask
+    ++ lib.optional enableAlternatives     beetsExternalPlugins.alternatives
+    ++ lib.optional enableCopyArtifacts    beetsExternalPlugins.copyartifacts
+    ++ lib.optional enableExtraFiles       beetsExternalPlugins.extrafiles
+  ;
 
   buildInputs = [
     imagemagick
@@ -177,46 +175,43 @@ in pythonPackages.buildPythonApplication rec {
     # https://github.com/beetbox/beets/blob/v1.4.9/setup.py
     pylast
     mpd2
-    discogs_client
+    discogs-client
     pyxdg
   ];
 
   patches = [
-    ./replaygain-default-bs1770gain.patch
+    # Bash completion fix for Nix
+    ./bash-completion-always-print.patch
+    # From some reason upstream assumes the program 'keyfinder-cli' is located
+    # in the path as `KeyFinder`
     ./keyfinder-default-bin.patch
-    ./mutagen-1.43.patch
-    (fetchpatch {
-      # Fixes failing testcases around the werkzeug component; can dropped after 1.4.9
-      url = "https://github.com/beetbox/beets/commit/d43d54e21cde97f57f19486925ab56b419254cc8.patch";
-      sha256 = "13n2gzmcgfi0m2ycl2r1hpczgksplnkc3y6b66vg57rx5y8nnv5c";
+  ]
+    # We need to force ffmpeg as the default, since we do not package
+    # bs1770gain, and set the absolute path there, to avoid impurities.
+    ++ lib.optional enableReplaygain (substituteAll {
+      src = ./replaygain-default-ffmpeg.patch;
+      ffmpeg = lib.getBin ffmpeg;
     })
+    # Put absolute Nix paths in place
+    ++ lib.optional enableConvert (substituteAll {
+      src = ./convert-plugin-ffmpeg-path.patch;
+      ffmpeg = lib.getBin ffmpeg;
+    })
+    ++ lib.optional enableBadfiles (substituteAll {
+      src = ./badfiles-plugin-nix-paths.patch;
+      inherit mp3val flac;
+    })
+  ;
 
-    # Fixes 548 tests due to breaking changes to the ast module
-    # https://github.com/beetbox/beets/pull/3621
-    # Can be dropped after 1.4.9
-    ./compatibility-with-breaking-changes-to-the-ast-module.patch
-  ];
-
+  # Disable failing tests
   postPatch = ''
     sed -i -e '/assertIn.*item.*path/d' test/test_info.py
     echo echo completion tests passed > test/rsrc/test_completion.sh
 
-    sed -i -e '/^BASH_COMPLETION_PATHS *=/,/^])$/ {
-      /^])$/i u"${completion}"
-    }' beets/ui/commands.py
-  '' + optionalString enableBadfiles ''
-    sed -i -e '/self\.run_command(\[/ {
-      s,"flac","${flac.bin}/bin/flac",
-      s,"mp3val","${mp3val}/bin/mp3val",
-    }' beetsplug/badfiles.py
-  '' + optionalString enableConvert ''
-    sed -i -e 's,\(util\.command_output(\)\([^)]\+\)),\1[b"${ffmpeg_3.bin}/bin/ffmpeg" if args[0] == b"ffmpeg" else args[0]] + \2[1:]),' beetsplug/convert.py
-  '' + optionalString enableReplaygain ''
-    sed -i -re '
-      s!^( *cmd *= *b?['\'''"])(bs1770gain['\'''"])!\1${bs1770gain}/bin/\2!
-    ' beetsplug/replaygain.py
-    sed -i -e 's/if has_program.*bs1770gain.*:/if True:/' \
-      test/test_replaygain.py
+    sed -i -e 's/len(mf.images)/0/' test/test_zero.py
+
+    # Google Play Music was discontinued
+    rm -r beetsplug/gmusic.py
   '';
 
   postInstall = ''
@@ -258,7 +253,7 @@ in pythonPackages.buildPythonApplication rec {
     EDITOR="${writeScript "beetconfig.sh" ''
       #!${runtimeShell}
       cat > "$1" <<CFG
-      plugins: ${concatStringsSep " " allEnabledPlugins}
+      plugins: ${lib.concatStringsSep " " allEnabledPlugins}
       CFG
     ''}" HOME="$tmphome" "$out/bin/beet" config -e
     EDITOR=true HOME="$tmphome" "$out/bin/beet" config -e
@@ -269,14 +264,16 @@ in pythonPackages.buildPythonApplication rec {
   makeWrapperArgs = [ "--set GI_TYPELIB_PATH \"$GI_TYPELIB_PATH\"" "--set GST_PLUGIN_SYSTEM_PATH_1_0 \"$GST_PLUGIN_SYSTEM_PATH_1_0\"" ];
 
   passthru = {
-    externalPlugins = plugins;
+    # FIXME: remove in favor of pkgs.beetsExternalPlugins
+    externalPlugins = beetsExternalPlugins;
+    updateScript = unstableGitUpdater { url = "https://github.com/beetbox/beets"; };
   };
 
-  meta = {
+  meta = with lib; {
     description = "Music tagger and library organizer";
     homepage = "http://beets.io";
     license = licenses.mit;
-    maintainers = with maintainers; [ aszlig domenkozar pjones ];
+    maintainers = with maintainers; [ aszlig doronbehar lovesegfault pjones ];
     platforms = platforms.linux;
   };
 }
diff --git a/pkgs/tools/audio/beets/keyfinder-default-bin.patch b/pkgs/tools/audio/beets/keyfinder-default-bin.patch
index 1ea195a678e..ec6bc3a5561 100644
--- a/pkgs/tools/audio/beets/keyfinder-default-bin.patch
+++ b/pkgs/tools/audio/beets/keyfinder-default-bin.patch
@@ -1,8 +1,8 @@
 diff --git a/beetsplug/keyfinder.py b/beetsplug/keyfinder.py
-index 34a4abc..59e8539 100644
+index 702003f0..08689cd8 100644
 --- a/beetsplug/keyfinder.py
 +++ b/beetsplug/keyfinder.py
-@@ -30,7 +30,7 @@ class KeyFinderPlugin(BeetsPlugin):
+@@ -31,7 +31,7 @@ class KeyFinderPlugin(BeetsPlugin):
      def __init__(self):
          super(KeyFinderPlugin, self).__init__()
          self.config.add({
@@ -11,18 +11,8 @@ index 34a4abc..59e8539 100644
              u'auto': True,
              u'overwrite': False,
          })
-@@ -59,8 +59,7 @@ class KeyFinderPlugin(BeetsPlugin):
-                 continue
- 
-             try:
--                output = util.command_output([bin, '-f',
--                                              util.syspath(item.path)])
-+                output = util.command_output([bin, util.syspath(item.path)])
-             except (subprocess.CalledProcessError, OSError) as exc:
-                 self._log.error(u'execution failed: {0}', exc)
-                 continue
 diff --git a/test/test_keyfinder.py b/test/test_keyfinder.py
-index 57e2bcd..c1ee916 100644
+index c8735e47..d7d670a4 100644
 --- a/test/test_keyfinder.py
 +++ b/test/test_keyfinder.py
 @@ -44,7 +44,7 @@ class KeyFinderTest(unittest.TestCase, TestHelper):
@@ -31,6 +21,6 @@ index 57e2bcd..c1ee916 100644
          command_output.assert_called_with(
 -            ['KeyFinder', '-f', util.syspath(item.path)])
 +            ['keyfinder-cli', util.syspath(item.path)])
- 
+
      def test_add_key_on_import(self, command_output):
-         command_output.return_value = 'dbm'
+         command_output.return_value = util.CommandOutput(b"dbm", b"")
diff --git a/pkgs/tools/audio/beets/mutagen-1.43.patch b/pkgs/tools/audio/beets/mutagen-1.43.patch
deleted file mode 100644
index 84cf1bab03e..00000000000
--- a/pkgs/tools/audio/beets/mutagen-1.43.patch
+++ /dev/null
@@ -1,29 +0,0 @@
-Backport https://github.com/beetbox/mediafile/commit/b3343c4ee08d1251ae5e2344401a2f5892b4e868
-to Beets 1.4.9.
-
-diff --git i/setup.py w/setup.py
-index 79278f8..b8d6068 100755
---- i/setup.py
-+++ w/setup.py
-@@ -87,7 +87,7 @@ setup(
- 
-     install_requires=[
-         'six>=1.9',
--        'mutagen>=1.33',
-+        'mutagen>=1.43',
-         'unidecode',
-         'musicbrainzngs>=0.4',
-         'pyyaml',
-diff --git i/test/test_mediafile.py w/test/test_mediafile.py
-index 36a2c53..54ef9dd 100644
---- i/test/test_mediafile.py
-+++ w/test/test_mediafile.py
-@@ -912,7 +912,7 @@ class AIFFTest(ReadWriteTestBase, unittest.TestCase):
-         'bitrate': 705600,
-         'format': u'AIFF',
-         'samplerate': 44100,
--        'bitdepth': 0,
-+        'bitdepth': 16,
-         'channels': 1,
-     }
- 
diff --git a/pkgs/tools/audio/beets/plugins/alternatives.nix b/pkgs/tools/audio/beets/plugins/alternatives.nix
new file mode 100644
index 00000000000..146e9f50664
--- /dev/null
+++ b/pkgs/tools/audio/beets/plugins/alternatives.nix
@@ -0,0 +1,32 @@
+{ lib, fetchFromGitHub, beets, pythonPackages }:
+
+pythonPackages.buildPythonApplication rec {
+  pname = "beets-alternatives";
+  version = "unstable-2021-02-01";
+
+  src = fetchFromGitHub {
+    repo = "beets-alternatives";
+    owner = "geigerzaehler";
+    rev = "288299e3aa9a1602717b04c28696fce5ce4259bf";
+    sha256 = "sha256-Xl7AHr33hXQqQDuFbWuj8HrIugeipJFPmvNXpCkU/mI=";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.cfg \
+      --replace "addopts = --cov --cov-report=term --cov-report=html" ""
+  '';
+
+  nativeBuildInputs = [ beets ];
+
+  checkInputs = with pythonPackages; [
+    pytestCheckHook
+    mock
+  ];
+
+  meta = with lib; {
+    description = "Beets plugin to manage external files";
+    homepage = "https://github.com/geigerzaehler/beets-alternatives";
+    maintainers = with maintainers; [ aszlig lovesegfault ];
+    license = licenses.mit;
+  };
+}
diff --git a/pkgs/tools/audio/beets/copyartifacts-plugin.nix b/pkgs/tools/audio/beets/plugins/copyartifacts.nix
index 9432cb9bd0b..2f1ecdfc369 100644
--- a/pkgs/tools/audio/beets/copyartifacts-plugin.nix
+++ b/pkgs/tools/audio/beets/plugins/copyartifacts.nix
@@ -1,13 +1,14 @@
-{ stdenv, fetchFromGitHub, beets, pythonPackages, glibcLocales }:
+{ lib, fetchFromGitHub, beets, pythonPackages, glibcLocales }:
 
 pythonPackages.buildPythonApplication {
-  name = "beets-copyartifacts";
+  pname = "beets-copyartifacts";
+  version = "unstable-2020-02-15";
 
   src = fetchFromGitHub {
     repo = "beets-copyartifacts";
-    owner = "sbarakat";
-    rev = "d0bb75c8fc8fe125e8191d73de7ade6212aec0fd";
-    sha256 = "19b4lqq1p45n348ssmql60jylw2fw7vfj9j22nly5qj5qx51j3g5";
+    owner = "adammillerio";
+    rev = "85eefaebf893cb673fa98bfde48406ec99fd1e4b";
+    sha256 = "sha256-bkT2BZZ2gdcacgvyrVe2vMrOMV8iMAm8Q5xyrZzyqU0=";
   };
 
   postPatch = ''
@@ -28,6 +29,6 @@ pythonPackages.buildPythonApplication {
   meta = {
     description = "Beets plugin to move non-music files during the import process";
     homepage = "https://github.com/sbarakat/beets-copyartifacts";
-    license = stdenv.lib.licenses.mit;
+    license = lib.licenses.mit;
   };
 }
diff --git a/pkgs/tools/audio/beets/plugins/extrafiles.nix b/pkgs/tools/audio/beets/plugins/extrafiles.nix
new file mode 100644
index 00000000000..9118765cc1b
--- /dev/null
+++ b/pkgs/tools/audio/beets/plugins/extrafiles.nix
@@ -0,0 +1,32 @@
+{ lib, fetchFromGitHub, beets, pythonPackages }:
+
+pythonPackages.buildPythonApplication rec {
+  pname = "beets-extrafiles";
+  version = "unstable-2020-12-13";
+
+  src = fetchFromGitHub {
+    repo = "beets-extrafiles";
+    owner = "Holzhaus";
+    rev = "a1d6ef9a9682b6bf7af9483541e56a3ff12247b8";
+    sha256 = "sha256-ajuEbieWjTCNjdRZuGUwvStZwjx260jmY0m+ZqNd7ec=";
+  };
+
+  postPatch = ''
+    sed -i -e '/install_requires/,/\]/{/beets/d}' setup.py
+    sed -i -e '/namespace_packages/d' setup.py
+  '';
+
+  nativeBuildInputs = [ beets ];
+
+  propagatedBuildInputs = with pythonPackages; [ mediafile ];
+
+  preCheck = ''
+    HOME=$TEMPDIR
+  '';
+
+  meta = {
+    homepage = "https://github.com/Holzhaus/beets-extrafiles";
+    description = "A plugin for beets that copies additional files and directories during the import process";
+    license = lib.licenses.mit;
+  };
+}
diff --git a/pkgs/tools/audio/beets/replaygain-default-bs1770gain.patch b/pkgs/tools/audio/beets/replaygain-default-bs1770gain.patch
deleted file mode 100644
index 538f9e93303..00000000000
--- a/pkgs/tools/audio/beets/replaygain-default-bs1770gain.patch
+++ /dev/null
@@ -1,17 +0,0 @@
-diff --git a/beetsplug/replaygain.py b/beetsplug/replaygain.py
-index 40b3a3a..9b54a5a 100644
---- a/beetsplug/replaygain.py
-+++ b/beetsplug/replaygain.py
-@@ -627,11 +627,10 @@ class ReplayGainPlugin(BeetsPlugin):
-         super(ReplayGainPlugin, self).__init__()
-         self.import_stages = [self.imported]
- 
--        # default backend is 'command' for backward-compatibility.
-         self.config.add({
-             'overwrite': False,
-             'auto': True,
--            'backend': u'command',
-+            'backend': u'bs1770gain',
-             'targetlevel': 89,
-         })
- 
diff --git a/pkgs/tools/audio/beets/replaygain-default-ffmpeg.patch b/pkgs/tools/audio/beets/replaygain-default-ffmpeg.patch
new file mode 100644
index 00000000000..0ceba3c0944
--- /dev/null
+++ b/pkgs/tools/audio/beets/replaygain-default-ffmpeg.patch
@@ -0,0 +1,26 @@
+diff --git i/beetsplug/replaygain.py w/beetsplug/replaygain.py
+index 9d6fa23c..c5800039 100644
+--- i/beetsplug/replaygain.py
++++ w/beetsplug/replaygain.py
+@@ -391,7 +391,7 @@ class FfmpegBackend(Backend):
+ 
+     def __init__(self, config, log):
+         super(FfmpegBackend, self).__init__(config, log)
+-        self._ffmpeg_path = "ffmpeg"
++        self._ffmpeg_path = "@ffmpeg@/bin/ffmpeg"
+ 
+         # check that ffmpeg is installed
+         try:
+@@ -1228,11 +1228,10 @@ class ReplayGainPlugin(BeetsPlugin):
+     def __init__(self):
+         super(ReplayGainPlugin, self).__init__()
+ 
+-        # default backend is 'command' for backward-compatibility.
+         self.config.add({
+             'overwrite': False,
+             'auto': True,
+-            'backend': u'command',
++            'backend': u'ffmpeg',
+             'threads': cpu_count(),
+             'parallel_on_import': False,
+             'per_disc': False,
diff --git a/pkgs/tools/audio/botamusique/default.nix b/pkgs/tools/audio/botamusique/default.nix
new file mode 100644
index 00000000000..36bd1343338
--- /dev/null
+++ b/pkgs/tools/audio/botamusique/default.nix
@@ -0,0 +1,155 @@
+{ pkgs
+, lib
+, stdenv
+, fetchFromGitHub
+, python3Packages
+, ffmpeg
+, makeWrapper
+, nixosTests
+
+# For the update script
+, coreutils
+, nix-prefetch-git
+, jq
+, nodePackages
+}:
+let
+  nodejs = pkgs.nodejs-12_x;
+  nodeEnv = import ../../../development/node-packages/node-env.nix {
+    inherit (pkgs) stdenv lib python2 runCommand writeTextFile;
+    inherit pkgs nodejs;
+    libtool = if pkgs.stdenv.isDarwin then pkgs.darwin.cctools else null;
+  };
+  botamusiqueNodePackages = import ./node-packages.nix {
+    inherit (pkgs) fetchurl nix-gitignore stdenv lib fetchgit;
+    inherit nodeEnv;
+  };
+
+  srcJson = lib.importJSON ./src.json;
+  src = fetchFromGitHub {
+    owner = "azlux";
+    repo = "botamusique";
+    inherit (srcJson) rev sha256;
+  };
+
+  nodeDependencies = (botamusiqueNodePackages.shell.override (old: {
+    src = src + "/web";
+  })).nodeDependencies;
+
+  # Python needed to instantiate the html templates
+  buildPython = python3Packages.python.withPackages (ps: [ ps.jinja2 ]);
+in
+stdenv.mkDerivation rec {
+  pname = "botamusique";
+  version = "unstable-${lib.substring 0 10 srcJson.date}";
+
+  inherit src;
+
+  patches = [
+    # botamusique by default resolves relative state paths by first checking
+    # whether it exists in the working directory, then falls back to using the
+    # installation directory. With Nix however, the installation directory is
+    # not writable, so that won't work. So we change this so that it uses
+    # relative paths unconditionally, whether they exist or not.
+    ./unconditional-relative-state-paths.patch
+
+    # We can't update the package at runtime with NixOS, so this patch makes
+    # the !update command mention that
+    ./no-runtime-update.patch
+  ];
+
+  postPatch = ''
+    # However, the function that's patched above is also used for
+    # configuration.default.ini, which is in the installation directory
+    # after all. So we need to counter-patch it here so it can find it absolutely
+    substituteInPlace mumbleBot.py \
+      --replace "configuration.default.ini" "$out/share/botamusique/configuration.default.ini"
+  '';
+
+  nativeBuildInputs = [
+    python3Packages.wrapPython
+    nodejs
+    makeWrapper
+  ];
+
+  pythonPath = with python3Packages; [
+    pymumble
+    packaging
+    magic
+    requests
+    youtube-dl
+    flask
+    mutagen
+    pillow
+    pyradios
+  ];
+
+  buildPhase = ''
+    runHook preBuild
+
+    # Generates artifacts in ./static
+    (
+      cd web
+      ln -s ${nodeDependencies}/lib/node_modules ./node_modules
+      export PATH="${nodeDependencies}/bin:$PATH"
+
+      npm run build
+    )
+
+    # Fills out http templates
+    ${buildPython}/bin/python scripts/translate_templates.py --lang-dir lang/ --template-dir templates/
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/share $out/bin
+    cp -r . $out/share/botamusique
+    chmod +x $out/share/botamusique/mumbleBot.py
+    wrapPythonProgramsIn $out/share/botamusique "$out $pythonPath"
+
+    # Convenience binary and wrap with ffmpeg dependency
+    makeWrapper $out/share/botamusique/mumbleBot.py $out/bin/botamusique \
+      --prefix PATH : ${lib.makeBinPath [ ffmpeg ]}
+
+    runHook postInstall
+  '';
+
+  passthru.updateScript = pkgs.writeShellScript "botamusique-updater" ''
+    export PATH=${lib.makeBinPath [ coreutils nix-prefetch-git jq nodePackages.node2nix ]}
+
+    nix-prefetch-git https://github.com/azlux/botamusique > ${toString ./src.json}
+    path=$(jq '.path' -r < ${toString ./src.json})
+
+    tmp=$(mktemp -d)
+    trap 'rm -rf "$tmp"' exit
+
+    # botamusique doesn't have a version in its package.json
+    # But that's needed for node2nix
+    jq < "$path"/web/package.json > "$tmp/package.json" \
+      --arg version "0.0.0" \
+      '.version |= $version'
+
+    node2nix \
+      --input "$tmp"/package.json \
+      --lock "$path"/web/package-lock.json \
+      --no-copy-node-env \
+      --development \
+      --composition /dev/null \
+      --output ${toString ./node-packages.nix}
+  '';
+
+  passthru.tests = {
+    inherit (nixosTests) botamusique;
+  };
+
+  meta = with lib; {
+    description = "Bot to play youtube / soundcloud / radio / local music on Mumble";
+    homepage = "https://github.com/azlux/botamusique";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ infinisil ];
+  };
+}
diff --git a/pkgs/tools/audio/botamusique/no-runtime-update.patch b/pkgs/tools/audio/botamusique/no-runtime-update.patch
new file mode 100644
index 00000000000..8fc8580fce8
--- /dev/null
+++ b/pkgs/tools/audio/botamusique/no-runtime-update.patch
@@ -0,0 +1,12 @@
+diff --git a/util.py b/util.py
+index bfec1ed..5147757 100644
+--- a/util.py
++++ b/util.py
+@@ -132,6 +132,7 @@ def check_update(current_version):
+ 
+ 
+ def update(current_version):
++    return "Can't update Nix installation at runtime"
+     global log
+ 
+     target = var.config.get('bot', 'target_version')
diff --git a/pkgs/tools/audio/botamusique/node-packages.nix b/pkgs/tools/audio/botamusique/node-packages.nix
new file mode 100644
index 00000000000..c9bdb6f0097
--- /dev/null
+++ b/pkgs/tools/audio/botamusique/node-packages.nix
@@ -0,0 +1,5237 @@
+# This file has been generated by node2nix 1.9.0. Do not edit!
+
+{nodeEnv, fetchurl, fetchgit, nix-gitignore, stdenv, lib, globalBuildInputs ? []}:
+
+let
+  sources = {
+    "@babel/code-frame-7.10.4" = {
+      name = "_at_babel_slash_code-frame";
+      packageName = "@babel/code-frame";
+      version = "7.10.4";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.10.4.tgz";
+        sha512 = "vG6SvB6oYEhvgisZNFRmRCUkLz11c7rp+tbNTynGqc6mS1d5ATd/sGyV6W0KZZnXRKMTzZDRgQT3Ou9jhpAfUg==";
+      };
+    };
+    "@babel/compat-data-7.12.7" = {
+      name = "_at_babel_slash_compat-data";
+      packageName = "@babel/compat-data";
+      version = "7.12.7";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.12.7.tgz";
+        sha512 = "YaxPMGs/XIWtYqrdEOZOCPsVWfEoriXopnsz3/i7apYPXQ3698UFhS6dVT1KN5qOsWmVgw/FOrmQgpRaZayGsw==";
+      };
+    };
+    "@babel/core-7.12.9" = {
+      name = "_at_babel_slash_core";
+      packageName = "@babel/core";
+      version = "7.12.9";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/core/-/core-7.12.9.tgz";
+        sha512 = "gTXYh3M5wb7FRXQy+FErKFAv90BnlOuNn1QkCK2lREoPAjrQCO49+HVSrFoe5uakFAF5eenS75KbO2vQiLrTMQ==";
+      };
+    };
+    "@babel/eslint-parser-7.12.1" = {
+      name = "_at_babel_slash_eslint-parser";
+      packageName = "@babel/eslint-parser";
+      version = "7.12.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/eslint-parser/-/eslint-parser-7.12.1.tgz";
+        sha512 = "cc7WQHnHQY3++/bghgbDtPx+5bf6xTsokyGzV6Qzh65NLz/unv+mPQuACkQ9GFhIhcTFv6yqwNaEcfX7EkOEsg==";
+      };
+    };
+    "@babel/eslint-plugin-7.12.1" = {
+      name = "_at_babel_slash_eslint-plugin";
+      packageName = "@babel/eslint-plugin";
+      version = "7.12.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/eslint-plugin/-/eslint-plugin-7.12.1.tgz";
+        sha512 = "rOjrD5yupTYCO4x0kEbQmi/NsaD+VGOD/9Cvso64WMVPY2y6o5Nvw2sqFWdeSEBdR1Dsa07YjplBs067x5YbXg==";
+      };
+    };
+    "@babel/generator-7.12.5" = {
+      name = "_at_babel_slash_generator";
+      packageName = "@babel/generator";
+      version = "7.12.5";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/generator/-/generator-7.12.5.tgz";
+        sha512 = "m16TQQJ8hPt7E+OS/XVQg/7U184MLXtvuGbCdA7na61vha+ImkyyNM/9DDA0unYCVZn3ZOhng+qz48/KBOT96A==";
+      };
+    };
+    "@babel/helper-annotate-as-pure-7.10.4" = {
+      name = "_at_babel_slash_helper-annotate-as-pure";
+      packageName = "@babel/helper-annotate-as-pure";
+      version = "7.10.4";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.10.4.tgz";
+        sha512 = "XQlqKQP4vXFB7BN8fEEerrmYvHp3fK/rBkRFz9jaJbzK0B1DSfej9Kc7ZzE8Z/OnId1jpJdNAZ3BFQjWG68rcA==";
+      };
+    };
+    "@babel/helper-builder-binary-assignment-operator-visitor-7.10.4" = {
+      name = "_at_babel_slash_helper-builder-binary-assignment-operator-visitor";
+      packageName = "@babel/helper-builder-binary-assignment-operator-visitor";
+      version = "7.10.4";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/helper-builder-binary-assignment-operator-visitor/-/helper-builder-binary-assignment-operator-visitor-7.10.4.tgz";
+        sha512 = "L0zGlFrGWZK4PbT8AszSfLTM5sDU1+Az/En9VrdT8/LmEiJt4zXt+Jve9DCAnQcbqDhCI+29y/L93mrDzddCcg==";
+      };
+    };
+    "@babel/helper-compilation-targets-7.12.5" = {
+      name = "_at_babel_slash_helper-compilation-targets";
+      packageName = "@babel/helper-compilation-targets";
+      version = "7.12.5";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.12.5.tgz";
+        sha512 = "+qH6NrscMolUlzOYngSBMIOQpKUGPPsc61Bu5W10mg84LxZ7cmvnBHzARKbDoFxVvqqAbj6Tg6N7bSrWSPXMyw==";
+      };
+    };
+    "@babel/helper-create-class-features-plugin-7.12.1" = {
+      name = "_at_babel_slash_helper-create-class-features-plugin";
+      packageName = "@babel/helper-create-class-features-plugin";
+      version = "7.12.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.12.1.tgz";
+        sha512 = "hkL++rWeta/OVOBTRJc9a5Azh5mt5WgZUGAKMD8JM141YsE08K//bp1unBBieO6rUKkIPyUE0USQ30jAy3Sk1w==";
+      };
+    };
+    "@babel/helper-create-regexp-features-plugin-7.12.7" = {
+      name = "_at_babel_slash_helper-create-regexp-features-plugin";
+      packageName = "@babel/helper-create-regexp-features-plugin";
+      version = "7.12.7";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/helper-create-regexp-features-plugin/-/helper-create-regexp-features-plugin-7.12.7.tgz";
+        sha512 = "idnutvQPdpbduutvi3JVfEgcVIHooQnhvhx0Nk9isOINOIGYkZea1Pk2JlJRiUnMefrlvr0vkByATBY/mB4vjQ==";
+      };
+    };
+    "@babel/helper-define-map-7.10.5" = {
+      name = "_at_babel_slash_helper-define-map";
+      packageName = "@babel/helper-define-map";
+      version = "7.10.5";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.10.5.tgz";
+        sha512 = "fMw4kgFB720aQFXSVaXr79pjjcW5puTCM16+rECJ/plGS+zByelE8l9nCpV1GibxTnFVmUuYG9U8wYfQHdzOEQ==";
+      };
+    };
+    "@babel/helper-explode-assignable-expression-7.12.1" = {
+      name = "_at_babel_slash_helper-explode-assignable-expression";
+      packageName = "@babel/helper-explode-assignable-expression";
+      version = "7.12.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/@babel/helper-explode-assignable-expression/-/helper-explode-assignable-expression-7.12.1.tgz";
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+    version = "0.0.0";
+    src = ../../../../../../../../../tmp/tmp.UAoivnXH3n;
+    dependencies = [
+      sources."@babel/code-frame-7.10.4"
+      sources."@babel/compat-data-7.12.7"
+      sources."@babel/core-7.12.9"
+      (sources."@babel/eslint-parser-7.12.1" // {
+        dependencies = [
+          sources."semver-6.3.0"
+        ];
+      })
+      sources."@babel/eslint-plugin-7.12.1"
+      sources."@babel/generator-7.12.5"
+      sources."@babel/helper-annotate-as-pure-7.10.4"
+      sources."@babel/helper-builder-binary-assignment-operator-visitor-7.10.4"
+      sources."@babel/helper-compilation-targets-7.12.5"
+      sources."@babel/helper-create-class-features-plugin-7.12.1"
+      sources."@babel/helper-create-regexp-features-plugin-7.12.7"
+      sources."@babel/helper-define-map-7.10.5"
+      sources."@babel/helper-explode-assignable-expression-7.12.1"
+      sources."@babel/helper-function-name-7.10.4"
+      sources."@babel/helper-get-function-arity-7.10.4"
+      sources."@babel/helper-hoist-variables-7.10.4"
+      sources."@babel/helper-member-expression-to-functions-7.12.7"
+      sources."@babel/helper-module-imports-7.12.5"
+      sources."@babel/helper-module-transforms-7.12.1"
+      sources."@babel/helper-optimise-call-expression-7.12.7"
+      sources."@babel/helper-plugin-utils-7.10.4"
+      sources."@babel/helper-remap-async-to-generator-7.12.1"
+      sources."@babel/helper-replace-supers-7.12.5"
+      sources."@babel/helper-simple-access-7.12.1"
+      sources."@babel/helper-skip-transparent-expression-wrappers-7.12.1"
+      sources."@babel/helper-split-export-declaration-7.11.0"
+      sources."@babel/helper-validator-identifier-7.10.4"
+      sources."@babel/helper-validator-option-7.12.1"
+      sources."@babel/helper-wrap-function-7.12.3"
+      sources."@babel/helpers-7.12.5"
+      sources."@babel/highlight-7.10.4"
+      sources."@babel/parser-7.12.7"
+      sources."@babel/plugin-proposal-async-generator-functions-7.12.1"
+      sources."@babel/plugin-proposal-class-properties-7.12.1"
+      sources."@babel/plugin-proposal-dynamic-import-7.12.1"
+      sources."@babel/plugin-proposal-export-namespace-from-7.12.1"
+      sources."@babel/plugin-proposal-json-strings-7.12.1"
+      sources."@babel/plugin-proposal-logical-assignment-operators-7.12.1"
+      sources."@babel/plugin-proposal-nullish-coalescing-operator-7.12.1"
+      sources."@babel/plugin-proposal-numeric-separator-7.12.7"
+      sources."@babel/plugin-proposal-object-rest-spread-7.12.1"
+      sources."@babel/plugin-proposal-optional-catch-binding-7.12.1"
+      sources."@babel/plugin-proposal-optional-chaining-7.12.7"
+      sources."@babel/plugin-proposal-private-methods-7.12.1"
+      sources."@babel/plugin-proposal-unicode-property-regex-7.12.1"
+      sources."@babel/plugin-syntax-async-generators-7.8.4"
+      sources."@babel/plugin-syntax-class-properties-7.12.1"
+      sources."@babel/plugin-syntax-dynamic-import-7.8.3"
+      sources."@babel/plugin-syntax-export-namespace-from-7.8.3"
+      sources."@babel/plugin-syntax-json-strings-7.8.3"
+      sources."@babel/plugin-syntax-logical-assignment-operators-7.10.4"
+      sources."@babel/plugin-syntax-nullish-coalescing-operator-7.8.3"
+      sources."@babel/plugin-syntax-numeric-separator-7.10.4"
+      sources."@babel/plugin-syntax-object-rest-spread-7.8.3"
+      sources."@babel/plugin-syntax-optional-catch-binding-7.8.3"
+      sources."@babel/plugin-syntax-optional-chaining-7.8.3"
+      sources."@babel/plugin-syntax-top-level-await-7.12.1"
+      sources."@babel/plugin-transform-arrow-functions-7.12.1"
+      sources."@babel/plugin-transform-async-to-generator-7.12.1"
+      sources."@babel/plugin-transform-block-scoped-functions-7.12.1"
+      sources."@babel/plugin-transform-block-scoping-7.12.1"
+      sources."@babel/plugin-transform-classes-7.12.1"
+      sources."@babel/plugin-transform-computed-properties-7.12.1"
+      sources."@babel/plugin-transform-destructuring-7.12.1"
+      sources."@babel/plugin-transform-dotall-regex-7.12.1"
+      sources."@babel/plugin-transform-duplicate-keys-7.12.1"
+      sources."@babel/plugin-transform-exponentiation-operator-7.12.1"
+      sources."@babel/plugin-transform-for-of-7.12.1"
+      sources."@babel/plugin-transform-function-name-7.12.1"
+      sources."@babel/plugin-transform-literals-7.12.1"
+      sources."@babel/plugin-transform-member-expression-literals-7.12.1"
+      sources."@babel/plugin-transform-modules-amd-7.12.1"
+      sources."@babel/plugin-transform-modules-commonjs-7.12.1"
+      sources."@babel/plugin-transform-modules-systemjs-7.12.1"
+      sources."@babel/plugin-transform-modules-umd-7.12.1"
+      sources."@babel/plugin-transform-named-capturing-groups-regex-7.12.1"
+      sources."@babel/plugin-transform-new-target-7.12.1"
+      sources."@babel/plugin-transform-object-super-7.12.1"
+      sources."@babel/plugin-transform-parameters-7.12.1"
+      sources."@babel/plugin-transform-property-literals-7.12.1"
+      sources."@babel/plugin-transform-regenerator-7.12.1"
+      sources."@babel/plugin-transform-reserved-words-7.12.1"
+      sources."@babel/plugin-transform-shorthand-properties-7.12.1"
+      sources."@babel/plugin-transform-spread-7.12.1"
+      sources."@babel/plugin-transform-sticky-regex-7.12.7"
+      sources."@babel/plugin-transform-template-literals-7.12.1"
+      sources."@babel/plugin-transform-typeof-symbol-7.12.1"
+      sources."@babel/plugin-transform-unicode-escapes-7.12.1"
+      sources."@babel/plugin-transform-unicode-regex-7.12.1"
+      sources."@babel/preset-env-7.12.7"
+      sources."@babel/preset-modules-0.1.4"
+      sources."@babel/runtime-7.12.5"
+      sources."@babel/template-7.12.7"
+      sources."@babel/traverse-7.12.9"
+      sources."@babel/types-7.12.7"
+      (sources."@eslint/eslintrc-0.2.1" // {
+        dependencies = [
+          sources."globals-12.4.0"
+        ];
+      })
+      sources."@fortawesome/fontawesome-common-types-0.2.32"
+      sources."@fortawesome/fontawesome-svg-core-1.2.32"
+      sources."@fortawesome/free-regular-svg-icons-5.15.1"
+      sources."@fortawesome/free-solid-svg-icons-5.15.1"
+      sources."@types/anymatch-1.3.1"
+      sources."@types/eslint-7.2.5"
+      sources."@types/eslint-scope-3.7.0"
+      sources."@types/estree-0.0.45"
+      sources."@types/html-minifier-terser-5.1.1"
+      sources."@types/json-schema-7.0.6"
+      sources."@types/json5-0.0.29"
+      sources."@types/node-14.14.9"
+      sources."@types/parse-json-4.0.0"
+      sources."@types/source-list-map-0.1.2"
+      sources."@types/tapable-1.0.6"
+      (sources."@types/uglify-js-3.11.1" // {
+        dependencies = [
+          sources."source-map-0.6.1"
+        ];
+      })
+      (sources."@types/webpack-4.41.25" // {
+        dependencies = [
+          sources."source-map-0.6.1"
+        ];
+      })
+      (sources."@types/webpack-sources-2.0.0" // {
+        dependencies = [
+          sources."source-map-0.7.3"
+        ];
+      })
+      sources."@webassemblyjs/ast-1.9.0"
+      sources."@webassemblyjs/floating-point-hex-parser-1.9.0"
+      sources."@webassemblyjs/helper-api-error-1.9.0"
+      sources."@webassemblyjs/helper-buffer-1.9.0"
+      sources."@webassemblyjs/helper-code-frame-1.9.0"
+      sources."@webassemblyjs/helper-fsm-1.9.0"
+      sources."@webassemblyjs/helper-module-context-1.9.0"
+      sources."@webassemblyjs/helper-wasm-bytecode-1.9.0"
+      sources."@webassemblyjs/helper-wasm-section-1.9.0"
+      sources."@webassemblyjs/ieee754-1.9.0"
+      sources."@webassemblyjs/leb128-1.9.0"
+      sources."@webassemblyjs/utf8-1.9.0"
+      sources."@webassemblyjs/wasm-edit-1.9.0"
+      sources."@webassemblyjs/wasm-gen-1.9.0"
+      sources."@webassemblyjs/wasm-opt-1.9.0"
+      sources."@webassemblyjs/wasm-parser-1.9.0"
+      sources."@webassemblyjs/wast-parser-1.9.0"
+      sources."@webassemblyjs/wast-printer-1.9.0"
+      sources."@webpack-cli/info-1.1.0"
+      sources."@webpack-cli/serve-1.1.0"
+      sources."@xtuc/ieee754-1.2.0"
+      sources."@xtuc/long-4.2.2"
+      sources."acorn-7.4.1"
+      sources."acorn-jsx-5.3.1"
+      sources."ajv-6.12.6"
+      sources."ajv-keywords-3.5.2"
+      sources."ansi-colors-4.1.1"
+      sources."ansi-regex-5.0.0"
+      sources."ansi-styles-3.2.1"
+      sources."anymatch-3.1.1"
+      sources."argparse-1.0.10"
+      sources."array-back-4.0.1"
+      sources."array-includes-3.1.2"
+      sources."array.prototype.flat-1.2.4"
+      sources."astral-regex-1.0.0"
+      sources."autoprefixer-10.0.2"
+      sources."babel-loader-8.2.1"
+      sources."babel-plugin-dynamic-import-node-2.3.3"
+      sources."balanced-match-1.0.0"
+      sources."big.js-5.2.2"
+      sources."binary-extensions-2.1.0"
+      sources."boolbase-1.0.0"
+      sources."bootstrap-4.5.3"
+      sources."bootswatch-4.5.3"
+      sources."brace-expansion-1.1.11"
+      sources."braces-3.0.2"
+      sources."browserslist-4.14.7"
+      sources."buffer-from-1.1.1"
+      sources."call-bind-1.0.0"
+      sources."callsites-3.1.0"
+      sources."camel-case-4.1.1"
+      sources."camelcase-6.2.0"
+      sources."caniuse-lite-1.0.30001161"
+      sources."chalk-2.4.2"
+      sources."chokidar-3.4.3"
+      sources."chrome-trace-event-1.0.2"
+      (sources."clean-css-4.2.3" // {
+        dependencies = [
+          sources."source-map-0.6.1"
+        ];
+      })
+      sources."color-convert-1.9.3"
+      sources."color-name-1.1.3"
+      sources."colorette-1.2.2"
+      sources."command-line-usage-6.1.1"
+      sources."commander-4.1.1"
+      sources."comment-parser-0.7.6"
+      sources."commondir-1.0.1"
+      sources."concat-map-0.0.1"
+      sources."contains-path-0.1.0"
+      sources."convert-source-map-1.7.0"
+      sources."core-js-3.7.0"
+      (sources."core-js-compat-3.7.0" // {
+        dependencies = [
+          sources."semver-7.0.0"
+        ];
+      })
+      sources."cosmiconfig-7.0.0"
+      sources."cross-spawn-7.0.3"
+      (sources."css-loader-5.0.1" // {
+        dependencies = [
+          sources."loader-utils-2.0.0"
+          sources."schema-utils-3.0.0"
+          sources."semver-7.3.2"
+        ];
+      })
+      sources."css-select-1.2.0"
+      sources."css-what-2.1.3"
+      sources."cssesc-3.0.0"
+      sources."debug-4.3.1"
+      sources."deep-extend-0.6.0"
+      sources."deep-is-0.1.3"
+      sources."define-properties-1.1.3"
+      sources."doctrine-3.0.0"
+      sources."dom-converter-0.2.0"
+      (sources."dom-serializer-0.2.2" // {
+        dependencies = [
+          sources."domelementtype-2.0.2"
+        ];
+      })
+      sources."domelementtype-1.3.1"
+      sources."domhandler-2.4.2"
+      sources."domutils-1.5.1"
+      sources."dot-case-3.0.3"
+      sources."electron-to-chromium-1.3.607"
+      sources."emoji-regex-7.0.3"
+      sources."emojis-list-3.0.0"
+      sources."end-of-stream-1.4.4"
+      (sources."enhanced-resolve-5.3.2" // {
+        dependencies = [
+          sources."tapable-2.1.1"
+        ];
+      })
+      sources."enquirer-2.3.6"
+      sources."entities-2.1.0"
+      sources."envinfo-7.7.3"
+      sources."error-ex-1.3.2"
+      sources."es-abstract-1.18.0-next.1"
+      sources."es-to-primitive-1.2.1"
+      sources."escalade-3.1.1"
+      sources."escape-string-regexp-1.0.5"
+      (sources."eslint-7.14.0" // {
+        dependencies = [
+          sources."ansi-styles-4.3.0"
+          sources."chalk-4.1.0"
+          sources."color-convert-2.0.1"
+          sources."color-name-1.1.4"
+          sources."eslint-scope-5.1.1"
+          sources."eslint-visitor-keys-2.0.0"
+          sources."globals-12.4.0"
+          sources."has-flag-4.0.0"
+          sources."semver-7.3.2"
+          sources."supports-color-7.2.0"
+        ];
+      })
+      (sources."eslint-import-resolver-node-0.3.4" // {
+        dependencies = [
+          sources."debug-2.6.9"
+          sources."ms-2.0.0"
+        ];
+      })
+      (sources."eslint-module-utils-2.6.0" // {
+        dependencies = [
+          sources."debug-2.6.9"
+          sources."ms-2.0.0"
+        ];
+      })
+      (sources."eslint-plugin-import-2.22.1" // {
+        dependencies = [
+          sources."debug-2.6.9"
+          sources."doctrine-1.5.0"
+          sources."ms-2.0.0"
+        ];
+      })
+      sources."eslint-plugin-jquery-1.5.1"
+      (sources."eslint-plugin-jsdoc-30.7.8" // {
+        dependencies = [
+          sources."semver-7.3.2"
+        ];
+      })
+      sources."eslint-rule-composer-0.3.0"
+      sources."eslint-scope-5.1.0"
+      sources."eslint-utils-2.1.0"
+      sources."eslint-visitor-keys-1.3.0"
+      sources."espree-7.3.0"
+      sources."esprima-4.0.1"
+      (sources."esquery-1.3.1" // {
+        dependencies = [
+          sources."estraverse-5.2.0"
+        ];
+      })
+      (sources."esrecurse-4.3.0" // {
+        dependencies = [
+          sources."estraverse-5.2.0"
+        ];
+      })
+      sources."estraverse-4.3.0"
+      sources."esutils-2.0.3"
+      sources."events-3.2.0"
+      sources."execa-4.1.0"
+      sources."fast-deep-equal-3.1.3"
+      sources."fast-json-stable-stringify-2.1.0"
+      sources."fast-levenshtein-2.0.6"
+      sources."file-entry-cache-5.0.1"
+      sources."fill-range-7.0.1"
+      (sources."find-cache-dir-2.1.0" // {
+        dependencies = [
+          sources."find-up-3.0.0"
+          sources."locate-path-3.0.0"
+          sources."p-limit-2.3.0"
+          sources."p-locate-3.0.0"
+          sources."p-try-2.2.0"
+          sources."pkg-dir-3.0.0"
+        ];
+      })
+      sources."find-up-2.1.0"
+      sources."flat-cache-2.0.1"
+      sources."flatted-2.0.2"
+      sources."fs.realpath-1.0.0"
+      sources."fsevents-2.1.3"
+      sources."function-bind-1.1.1"
+      sources."functional-red-black-tree-1.0.1"
+      sources."gensync-1.0.0-beta.2"
+      sources."get-intrinsic-1.0.1"
+      sources."get-stream-5.2.0"
+      sources."glob-7.1.6"
+      sources."glob-parent-5.1.1"
+      sources."glob-to-regexp-0.4.1"
+      sources."globals-11.12.0"
+      sources."graceful-fs-4.2.4"
+      sources."has-1.0.3"
+      sources."has-flag-3.0.0"
+      sources."has-symbols-1.0.1"
+      sources."he-1.2.0"
+      sources."hosted-git-info-2.8.9"
+      sources."html-minifier-terser-5.1.1"
+      sources."html-webpack-plugin-4.5.0"
+      (sources."htmlparser2-3.10.1" // {
+        dependencies = [
+          sources."entities-1.1.2"
+        ];
+      })
+      sources."human-signals-1.1.1"
+      sources."icss-utils-5.1.0"
+      sources."ignore-4.0.6"
+      sources."import-fresh-3.2.2"
+      (sources."import-local-3.0.2" // {
+        dependencies = [
+          sources."find-up-4.1.0"
+          sources."locate-path-5.0.0"
+          sources."p-limit-2.3.0"
+          sources."p-locate-4.1.0"
+          sources."p-try-2.2.0"
+          sources."path-exists-4.0.0"
+          sources."pkg-dir-4.2.0"
+        ];
+      })
+      sources."imurmurhash-0.1.4"
+      sources."indexes-of-1.0.1"
+      sources."inflight-1.0.6"
+      sources."inherits-2.0.4"
+      sources."interpret-2.2.0"
+      sources."is-arrayish-0.2.1"
+      sources."is-binary-path-2.1.0"
+      sources."is-callable-1.2.2"
+      sources."is-core-module-2.1.0"
+      sources."is-date-object-1.0.2"
+      sources."is-extglob-2.1.1"
+      sources."is-fullwidth-code-point-2.0.0"
+      sources."is-glob-4.0.1"
+      sources."is-negative-zero-2.0.0"
+      sources."is-number-7.0.0"
+      sources."is-regex-1.1.1"
+      sources."is-stream-2.0.0"
+      sources."is-string-1.0.5"
+      sources."is-symbol-1.0.3"
+      sources."isarray-1.0.0"
+      sources."isexe-2.0.0"
+      (sources."jest-worker-26.6.2" // {
+        dependencies = [
+          sources."has-flag-4.0.0"
+          sources."supports-color-7.2.0"
+        ];
+      })
+      sources."jquery-3.5.1"
+      sources."jquery-migrate-3.3.2"
+      sources."js-tokens-4.0.0"
+      sources."js-yaml-3.14.0"
+      sources."jsdoctypeparser-9.0.0"
+      sources."jsesc-2.5.2"
+      sources."json-parse-better-errors-1.0.2"
+      sources."json-parse-even-better-errors-2.3.1"
+      sources."json-schema-traverse-0.4.1"
+      sources."json-stable-stringify-without-jsonify-1.0.1"
+      sources."json5-2.1.3"
+      sources."klona-2.0.4"
+      sources."leven-3.1.0"
+      sources."levn-0.4.1"
+      sources."lines-and-columns-1.1.6"
+      (sources."load-json-file-2.0.0" // {
+        dependencies = [
+          sources."parse-json-2.2.0"
+          sources."pify-2.3.0"
+        ];
+      })
+      sources."loader-runner-4.1.0"
+      (sources."loader-utils-1.4.0" // {
+        dependencies = [
+          sources."json5-1.0.1"
+        ];
+      })
+      sources."locate-path-2.0.0"
+      sources."lodash-4.17.21"
+      sources."lower-case-2.0.1"
+      sources."make-dir-2.1.0"
+      sources."merge-stream-2.0.0"
+      sources."mime-db-1.44.0"
+      sources."mime-types-2.1.27"
+      sources."mimic-fn-2.1.0"
+      (sources."mini-css-extract-plugin-1.3.1" // {
+        dependencies = [
+          sources."loader-utils-2.0.0"
+          sources."schema-utils-3.0.0"
+        ];
+      })
+      sources."minimatch-3.0.4"
+      sources."minimist-1.2.5"
+      sources."mkdirp-0.5.5"
+      sources."ms-2.1.2"
+      sources."nanoid-3.1.23"
+      sources."natural-compare-1.4.0"
+      sources."neo-async-2.6.2"
+      sources."no-case-3.0.3"
+      sources."node-releases-1.1.67"
+      sources."normalize-package-data-2.5.0"
+      sources."normalize-path-3.0.0"
+      sources."normalize-range-0.1.2"
+      sources."npm-run-path-4.0.1"
+      sources."nth-check-1.0.2"
+      sources."num2fraction-1.2.2"
+      sources."object-inspect-1.8.0"
+      sources."object-keys-1.1.1"
+      sources."object.assign-4.1.2"
+      (sources."object.getownpropertydescriptors-2.1.0" // {
+        dependencies = [
+          sources."es-abstract-1.17.7"
+        ];
+      })
+      (sources."object.values-1.1.1" // {
+        dependencies = [
+          sources."es-abstract-1.17.7"
+        ];
+      })
+      sources."once-1.4.0"
+      sources."onetime-5.1.2"
+      sources."optionator-0.9.1"
+      sources."p-limit-1.3.0"
+      sources."p-locate-2.0.0"
+      sources."p-try-1.0.0"
+      sources."param-case-3.0.3"
+      sources."parent-module-1.0.1"
+      sources."parse-json-5.1.0"
+      sources."pascal-case-3.1.1"
+      sources."path-exists-3.0.0"
+      sources."path-is-absolute-1.0.1"
+      sources."path-key-3.1.1"
+      sources."path-parse-1.0.6"
+      sources."path-type-4.0.0"
+      sources."picomatch-2.2.2"
+      sources."pify-4.0.1"
+      sources."pkg-dir-2.0.0"
+      sources."popper.js-1.16.1"
+      (sources."postcss-8.2.15" // {
+        dependencies = [
+          sources."source-map-0.6.1"
+        ];
+      })
+      (sources."postcss-loader-4.1.0" // {
+        dependencies = [
+          sources."loader-utils-2.0.0"
+          sources."schema-utils-3.0.0"
+          sources."semver-7.3.2"
+        ];
+      })
+      sources."postcss-modules-extract-imports-3.0.0"
+      sources."postcss-modules-local-by-default-4.0.0"
+      sources."postcss-modules-scope-3.0.0"
+      sources."postcss-modules-values-4.0.0"
+      sources."postcss-selector-parser-6.0.4"
+      sources."postcss-value-parser-4.1.0"
+      sources."prelude-ls-1.2.1"
+      sources."pretty-error-2.1.2"
+      sources."progress-2.0.3"
+      sources."pump-3.0.0"
+      sources."punycode-2.1.1"
+      sources."randombytes-2.1.0"
+      (sources."read-pkg-2.0.0" // {
+        dependencies = [
+          sources."path-type-2.0.0"
+          sources."pify-2.3.0"
+        ];
+      })
+      sources."read-pkg-up-2.0.0"
+      sources."readable-stream-3.6.0"
+      sources."readdirp-3.5.0"
+      sources."rechoir-0.7.0"
+      sources."reduce-flatten-2.0.0"
+      sources."regenerate-1.4.2"
+      sources."regenerate-unicode-properties-8.2.0"
+      sources."regenerator-runtime-0.13.7"
+      sources."regenerator-transform-0.14.5"
+      sources."regexpp-3.1.0"
+      sources."regexpu-core-4.7.1"
+      sources."regextras-0.7.1"
+      sources."regjsgen-0.5.2"
+      (sources."regjsparser-0.6.4" // {
+        dependencies = [
+          sources."jsesc-0.5.0"
+        ];
+      })
+      sources."relateurl-0.2.7"
+      (sources."renderkid-2.0.4" // {
+        dependencies = [
+          sources."ansi-regex-2.1.1"
+          sources."strip-ansi-3.0.1"
+        ];
+      })
+      sources."resolve-1.19.0"
+      (sources."resolve-cwd-3.0.0" // {
+        dependencies = [
+          sources."resolve-from-5.0.0"
+        ];
+      })
+      sources."resolve-from-4.0.0"
+      sources."rimraf-2.6.3"
+      sources."safe-buffer-5.1.2"
+      sources."sass-1.29.0"
+      (sources."sass-loader-10.1.0" // {
+        dependencies = [
+          sources."loader-utils-2.0.0"
+          sources."schema-utils-3.0.0"
+          sources."semver-7.3.2"
+        ];
+      })
+      sources."schema-utils-2.7.1"
+      sources."semver-5.7.1"
+      sources."serialize-javascript-5.0.1"
+      sources."shebang-command-2.0.0"
+      sources."shebang-regex-3.0.0"
+      sources."signal-exit-3.0.3"
+      sources."slice-ansi-2.1.0"
+      sources."source-list-map-2.0.1"
+      sources."source-map-0.5.7"
+      (sources."source-map-support-0.5.19" // {
+        dependencies = [
+          sources."source-map-0.6.1"
+        ];
+      })
+      sources."spdx-correct-3.1.1"
+      sources."spdx-exceptions-2.3.0"
+      sources."spdx-expression-parse-3.0.1"
+      sources."spdx-license-ids-3.0.6"
+      sources."sprintf-js-1.0.3"
+      (sources."string-width-3.1.0" // {
+        dependencies = [
+          sources."ansi-regex-4.1.0"
+          sources."strip-ansi-5.2.0"
+        ];
+      })
+      sources."string.prototype.trimend-1.0.3"
+      sources."string.prototype.trimstart-1.0.3"
+      (sources."string_decoder-1.3.0" // {
+        dependencies = [
+          sources."safe-buffer-5.2.1"
+        ];
+      })
+      sources."strip-ansi-6.0.0"
+      sources."strip-bom-3.0.0"
+      sources."strip-final-newline-2.0.0"
+      sources."strip-json-comments-3.1.1"
+      sources."supports-color-5.5.0"
+      sources."table-5.4.6"
+      sources."table-layout-1.0.1"
+      sources."tapable-1.1.3"
+      (sources."terser-4.8.0" // {
+        dependencies = [
+          sources."commander-2.20.3"
+          sources."source-map-0.6.1"
+        ];
+      })
+      (sources."terser-webpack-plugin-5.0.3" // {
+        dependencies = [
+          sources."commander-2.20.3"
+          sources."p-limit-3.0.2"
+          sources."p-try-2.2.0"
+          sources."schema-utils-3.0.0"
+          sources."source-map-0.6.1"
+          (sources."terser-5.5.0" // {
+            dependencies = [
+              sources."source-map-0.7.3"
+            ];
+          })
+        ];
+      })
+      sources."text-table-0.2.0"
+      sources."to-fast-properties-2.0.0"
+      sources."to-regex-range-5.0.1"
+      (sources."tsconfig-paths-3.9.0" // {
+        dependencies = [
+          sources."json5-1.0.1"
+        ];
+      })
+      sources."tslib-1.14.1"
+      sources."type-check-0.4.0"
+      sources."type-fest-0.8.1"
+      sources."typical-5.2.0"
+      sources."unicode-canonical-property-names-ecmascript-1.0.4"
+      sources."unicode-match-property-ecmascript-1.0.4"
+      sources."unicode-match-property-value-ecmascript-1.2.0"
+      sources."unicode-property-aliases-ecmascript-1.1.0"
+      sources."uniq-1.0.1"
+      sources."uri-js-4.4.0"
+      sources."util-deprecate-1.0.2"
+      sources."util.promisify-1.0.0"
+      sources."utila-0.4.0"
+      sources."v8-compile-cache-2.2.0"
+      sources."validate-npm-package-license-3.0.4"
+      sources."watchpack-2.0.1"
+      (sources."webpack-5.6.0" // {
+        dependencies = [
+          sources."acorn-8.0.4"
+          sources."eslint-scope-5.1.1"
+          sources."find-up-4.1.0"
+          sources."locate-path-5.0.0"
+          sources."p-limit-2.3.0"
+          sources."p-locate-4.1.0"
+          sources."p-try-2.2.0"
+          sources."path-exists-4.0.0"
+          sources."pkg-dir-4.2.0"
+          sources."schema-utils-3.0.0"
+          sources."source-map-0.6.1"
+          sources."tapable-2.1.1"
+          sources."webpack-sources-2.2.0"
+        ];
+      })
+      (sources."webpack-cli-4.2.0" // {
+        dependencies = [
+          sources."commander-6.2.0"
+        ];
+      })
+      sources."webpack-merge-4.2.2"
+      (sources."webpack-sources-1.4.3" // {
+        dependencies = [
+          sources."source-map-0.6.1"
+        ];
+      })
+      sources."which-2.0.2"
+      sources."word-wrap-1.2.3"
+      sources."wordwrapjs-4.0.0"
+      sources."wrappy-1.0.2"
+      sources."write-1.0.3"
+      sources."yaml-1.10.0"
+    ];
+    buildInputs = globalBuildInputs;
+    meta = {
+      homepage = "https://github.com/azlux/botamusique#readme";
+      license = "MIT";
+    };
+    production = false;
+    bypassCache = true;
+    reconstructLock = false;
+  };
+in
+{
+  args = args;
+  sources = sources;
+  tarball = nodeEnv.buildNodeSourceDist args;
+  package = nodeEnv.buildNodePackage args;
+  shell = nodeEnv.buildNodeShell args;
+  nodeDependencies = nodeEnv.buildNodeDependencies (lib.overrideExisting args {
+    src = stdenv.mkDerivation {
+      name = args.name + "-package-json";
+      src = nix-gitignore.gitignoreSourcePure [
+        "*"
+        "!package.json"
+        "!package-lock.json"
+      ] args.src;
+      dontBuild = true;
+      installPhase = "mkdir -p $out; cp -r ./* $out;";
+    };
+  });
+}
diff --git a/pkgs/tools/audio/botamusique/src.json b/pkgs/tools/audio/botamusique/src.json
new file mode 100644
index 00000000000..d1337f5ae68
--- /dev/null
+++ b/pkgs/tools/audio/botamusique/src.json
@@ -0,0 +1,10 @@
+{
+  "url": "https://github.com/azlux/botamusique",
+  "rev": "ba02cdebf2e175dc371995361eafcb88ad2c1b52",
+  "date": "2021-06-01T23:39:44+02:00",
+  "path": "/nix/store/dp5vnj7zqv1sp1ab5xycvvqdpia9xb71-botamusique",
+  "sha256": "01d51y6h38hs4ynjgz050ryy14sp5y2c3n7f80mcv0a4ls8413qp",
+  "fetchSubmodules": false,
+  "deepClone": false,
+  "leaveDotGit": false
+}
diff --git a/pkgs/tools/audio/botamusique/unconditional-relative-state-paths.patch b/pkgs/tools/audio/botamusique/unconditional-relative-state-paths.patch
new file mode 100644
index 00000000000..3642a034fc8
--- /dev/null
+++ b/pkgs/tools/audio/botamusique/unconditional-relative-state-paths.patch
@@ -0,0 +1,22 @@
+diff --git a/util.py b/util.py
+index bfec1ed..0546772 100644
+--- a/util.py
++++ b/util.py
+@@ -22,16 +22,7 @@ log = logging.getLogger("bot")
+ 
+ 
+ def solve_filepath(path):
+-    if not path:
+-        return ''
+-
+-    if path[0] == '/':
+-        return path
+-    elif os.path.exists(path):
+-        return path
+-    else:
+-        mydir = os.path.dirname(os.path.realpath(__file__))
+-        return mydir + '/' + path
++    return path
+ 
+ 
+ def get_recursive_file_list_sorted(path):
diff --git a/pkgs/tools/audio/bpm-tools/default.nix b/pkgs/tools/audio/bpm-tools/default.nix
index 6207cbeb9fe..6e7236b1008 100644
--- a/pkgs/tools/audio/bpm-tools/default.nix
+++ b/pkgs/tools/audio/bpm-tools/default.nix
@@ -1,16 +1,16 @@
-{
-  stdenv,
-  fetchurl,
-  gnuplot,
-  sox,
-  flac,
-  id3v2,
-  vorbis-tools,
-  makeWrapper
+{ stdenv
+, lib
+, fetchurl
+, gnuplot
+, sox
+, flac
+, id3v2
+, vorbis-tools
+, makeWrapper
 }:
 
 let
-  path = stdenv.lib.makeBinPath [ gnuplot sox flac id3v2 vorbis-tools ];
+  path = lib.makeBinPath [ gnuplot sox flac id3v2 vorbis-tools ];
 in
 stdenv.mkDerivation rec {
   pname = "bpm-tools";
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     wrapProgram $out/bin/bpm-graph --prefix PATH : "${path}"
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "http://www.pogo.org.uk/~mark/bpm-tools/";
     description = "Automatically calculate BPM (tempo) of music files";
     license = licenses.gpl2;
diff --git a/pkgs/tools/audio/darkice/default.nix b/pkgs/tools/audio/darkice/default.nix
index 89b93b02865..1ff66e83e5a 100644
--- a/pkgs/tools/audio/darkice/default.nix
+++ b/pkgs/tools/audio/darkice/default.nix
@@ -1,5 +1,5 @@
-{ stdenv, fetchurl, pkgconfig
-, libjack2, alsaLib, libpulseaudio
+{ lib, stdenv, fetchurl, pkg-config
+, libjack2, alsa-lib, libpulseaudio
 , faac, lame, libogg, libopus, libvorbis, libsamplerate
 }:
 
@@ -12,9 +12,9 @@ stdenv.mkDerivation rec {
     sha256 = "1rlxds7ssq7nk2in4s46xws7xy9ylxsqgcz85hxjgh17lsm0y39c";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [
-    libopus libvorbis libogg libpulseaudio alsaLib libsamplerate libjack2 lame
+    libopus libvorbis libogg libpulseaudio alsa-lib libsamplerate libjack2 lame
   ];
 
   NIX_CFLAGS_COMPILE = "-fpermissive";
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = "http://darkice.org/";
     description = "Live audio streamer";
-    license = stdenv.lib.licenses.gpl3;
-    maintainers = with stdenv.lib.maintainers; [ ikervagyok fpletz ];
+    license = lib.licenses.gpl3;
+    maintainers = with lib.maintainers; [ ikervagyok fpletz ];
   };
 }
diff --git a/pkgs/tools/audio/dir2opus/default.nix b/pkgs/tools/audio/dir2opus/default.nix
index 87200654703..d23c334ad62 100644
--- a/pkgs/tools/audio/dir2opus/default.nix
+++ b/pkgs/tools/audio/dir2opus/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, python, mutagen, wrapPython, opusTools, mpg123 }:
+{ lib, stdenv, fetchurl, python, mutagen, wrapPython, opusTools, mpg123 }:
 
 let version = "0.12.2"; in
 stdenv.mkDerivation rec {
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   postFixup = "wrapPythonPrograms";
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "https://github.com/ehmry/dir2opus";
     maintainers = [ maintainers.ehmry ];
     license = licenses.gpl2;
diff --git a/pkgs/tools/audio/essentia-extractor/default.nix b/pkgs/tools/audio/essentia-extractor/default.nix
index 0d2bb17a75d..63ebbb0ffc0 100644
--- a/pkgs/tools/audio/essentia-extractor/default.nix
+++ b/pkgs/tools/audio/essentia-extractor/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ lib, stdenv, fetchurl }:
 let
   arch_table = {
     "x86_64-linux" = "linux-x86_64";
@@ -14,13 +14,13 @@ let
 
   arch = arch_table.${stdenv.system};
   sha = sha_table.${stdenv.system};
-in stdenv.mkDerivation rec {
+in
+stdenv.mkDerivation rec {
   pname = "essentia-extractor";
   version = "2.1_beta2";
 
   src = fetchurl {
-    url =
-      "ftp://ftp.acousticbrainz.org/pub/acousticbrainz/essentia-extractor-v${version}-${arch}.tar.gz";
+    url = "ftp://ftp.acousticbrainz.org/pub/acousticbrainz/essentia-extractor-v${version}-${arch}.tar.gz";
     sha256 = sha;
   };
 
@@ -31,7 +31,7 @@ in stdenv.mkDerivation rec {
     cp streaming_extractor_music $out/bin
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "https://acousticbrainz.org/download";
     description = "AcousticBrainz audio feature extractor";
     license = licenses.agpl3Plus;
diff --git a/pkgs/tools/audio/ezstream/default.nix b/pkgs/tools/audio/ezstream/default.nix
index 02a6e9d37f3..ee85f1aabd3 100644
--- a/pkgs/tools/audio/ezstream/default.nix
+++ b/pkgs/tools/audio/ezstream/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, libiconv, libshout, taglib, libxml2, pkgconfig }:
+{ lib, stdenv, fetchurl, libiconv, libshout, taglib, libxml2, pkg-config }:
 
 stdenv.mkDerivation rec {
   pname = "ezstream";
@@ -10,11 +10,11 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ libiconv libshout taglib libxml2 ];
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
 
   doCheck = true;
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "A command line source client for Icecast media streaming servers";
     longDescription = ''
       Ezstream is a command line source client for Icecast media
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
       from standard input without reencoding and thus requires only
       very little CPU resources.
     '';
-    homepage = "http://icecast.org/ezstream/";
+    homepage = "https://icecast.org/ezstream/";
     license = licenses.gpl2;
     maintainers = [ maintainers.barrucadu ];
     platforms = platforms.all;
diff --git a/pkgs/tools/audio/glyr/default.nix b/pkgs/tools/audio/glyr/default.nix
index 41490381487..60585c3b354 100644
--- a/pkgs/tools/audio/glyr/default.nix
+++ b/pkgs/tools/audio/glyr/default.nix
@@ -1,5 +1,5 @@
-{ stdenv, fetchFromGitHub, cmake
-, curl, glib, sqlite, pkgconfig }:
+{ lib, stdenv, fetchFromGitHub, cmake
+, curl, glib, sqlite, pkg-config }:
 
 stdenv.mkDerivation rec {
   version = "1.0.10";
@@ -12,10 +12,10 @@ stdenv.mkDerivation rec {
     sha256 = "1miwbqzkhg0v3zysrwh60pj9sv6ci4lzq2vq2hhc6pc6hdyh8xyr";
   };
 
-  nativeBuildInputs = [ cmake pkgconfig ];
+  nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ sqlite glib curl ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     license = licenses.lgpl3;
     description = "A music related metadata searchengine";
     homepage = "https://github.com/sahib/glyr";
diff --git a/pkgs/tools/audio/google-music-scripts/default.nix b/pkgs/tools/audio/google-music-scripts/default.nix
deleted file mode 100644
index 272cf902539..00000000000
--- a/pkgs/tools/audio/google-music-scripts/default.nix
+++ /dev/null
@@ -1,59 +0,0 @@
-{ lib, python3 }:
-
-let
-  py = python3.override {
-    packageOverrides = self: super: {
-      loguru = super.loguru.overridePythonAttrs (oldAttrs: rec {
-        version = "0.4.0";
-        src = oldAttrs.src.override {
-          inherit version;
-          sha256 = "0j47cg3gi8in4z6z4w3by6x02mpkkfl78gr85xjn5rg0nxiz7pfm";
-        };
-      });
-    };
-  };
-
-in
-
-with py.pkgs;
-
-buildPythonApplication rec {
-  pname = "google-music-scripts";
-  version = "4.5.0";
-
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "0apwgj86whrc077dfymvyb4qwj19bawyrx49g4kg364895v0rbbq";
-  };
-
-  # pendulum pinning was to prevent PEP517 from trying to build from source
-  postPatch = ''
-    substituteInPlace setup.py \
-      --replace "tomlkit>=0.5,<0.6" "tomlkit" \
-      --replace "pendulum>=2.0,<=3.0,!=2.0.5,!=2.1.0" "pendulum"
-  '';
-
-  propagatedBuildInputs = [
-    appdirs
-    audio-metadata
-    google-music
-    google-music-proto
-    google-music-utils
-    loguru
-    pendulum
-    natsort
-    tomlkit
-  ];
-
-  # No tests
-  checkPhase = ''
-    $out/bin/gms --help >/dev/null
-  '';
-
-  meta = with lib; {
-    homepage = "https://github.com/thebigmunch/google-music-scripts";
-    description = "A CLI utility for interacting with Google Music";
-    license = licenses.mit;
-    maintainers = with maintainers; [ jakewaksbaum ];
-  };
-}
diff --git a/pkgs/tools/audio/gvolicon/default.nix b/pkgs/tools/audio/gvolicon/default.nix
index 5190699be08..9ef8eb43772 100644
--- a/pkgs/tools/audio/gvolicon/default.nix
+++ b/pkgs/tools/audio/gvolicon/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, makeWrapper, alsaLib, pkgconfig, fetchgit, gtk3, gnome3, gdk-pixbuf, librsvg, wrapGAppsHook }:
+{ lib, stdenv, makeWrapper, alsa-lib, pkg-config, fetchgit, gtk3, gnome, gdk-pixbuf, librsvg, wrapGAppsHook }:
 
 stdenv.mkDerivation {
   name = "gvolicon-2014-04-28";
@@ -8,9 +8,9 @@ stdenv.mkDerivation {
     sha256 = "1sr9wyy7w898vq63yd003yp3k66hd4vm8b0qsm9zvmwmpiz4wvln";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [
-    makeWrapper alsaLib gtk3 gdk-pixbuf gnome3.adwaita-icon-theme
+    makeWrapper alsa-lib gtk3 gdk-pixbuf gnome.adwaita-icon-theme
     librsvg wrapGAppsHook
   ];
 
@@ -21,8 +21,8 @@ stdenv.mkDerivation {
   meta = {
     description = "A simple and lightweight volume icon that sits in your system tray";
     homepage = "https://github.com/Unia/gvolicon";
-    platforms = stdenv.lib.platforms.linux;
-    license = stdenv.lib.licenses.gpl3Plus;
-    maintainers = [ stdenv.lib.maintainers.bennofs ];
+    platforms = lib.platforms.linux;
+    license = lib.licenses.gpl3Plus;
+    maintainers = [ lib.maintainers.bennofs ];
   };
 }
diff --git a/pkgs/tools/audio/isrcsubmit/default.nix b/pkgs/tools/audio/isrcsubmit/default.nix
new file mode 100644
index 00000000000..457ca2b0d1c
--- /dev/null
+++ b/pkgs/tools/audio/isrcsubmit/default.nix
@@ -0,0 +1,24 @@
+{ lib, stdenv, fetchFromGitHub, python3Packages }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "isrcsubmit";
+  version = "2.1.0";
+
+  src = fetchFromGitHub {
+    owner = "JonnyJD";
+    repo = "musicbrainz-isrcsubmit";
+    rev = "v${version}";
+    sha256 = "1lqs4jl2xv1zxmf0xsihk9rxzx2awq87g51vd7y3cq1vhj1icxqa";
+  };
+
+  propagatedBuildInputs = with python3Packages; [ musicbrainzngs discid ];
+
+  meta = with lib; {
+    # drutil is required on Darwin, which does not seem to be available in nixpkgs
+    broken = stdenv.isDarwin;
+    description = "Script to submit ISRCs from disc to MusicBrainz";
+    license = licenses.gpl3Plus;
+    homepage = "http://jonnyjd.github.io/musicbrainz-isrcsubmit/";
+    maintainers = with maintainers; [ eduardosm ];
+  };
+}
diff --git a/pkgs/tools/audio/kaldi/default.nix b/pkgs/tools/audio/kaldi/default.nix
new file mode 100644
index 00000000000..2d61a984a00
--- /dev/null
+++ b/pkgs/tools/audio/kaldi/default.nix
@@ -0,0 +1,88 @@
+{ lib, stdenv
+, openblas
+, blas
+, lapack
+, openfst
+, icu
+, cmake
+, pkg-config
+, fetchFromGitHub
+, git
+, python3
+}:
+
+assert blas.implementation == "openblas" && lapack.implementation == "openblas";
+let
+  # rev from https://github.com/kaldi-asr/kaldi/blob/master/cmake/third_party/openfst.cmake
+  openfst = fetchFromGitHub {
+    owner = "kkm000";
+    repo = "openfst";
+    rev = "0bca6e76d24647427356dc242b0adbf3b5f1a8d9";
+    sha256 = "1802rr14a03zl1wa5a0x1fa412kcvbgprgkadfj5s6s3agnn11rx";
+  };
+in
+stdenv.mkDerivation {
+  pname = "kaldi";
+  version = "2020-12-26";
+
+  src = fetchFromGitHub {
+    owner = "kaldi-asr";
+    repo = "kaldi";
+    rev = "813b73185a18725e4f6021981d17221d6ee23a19";
+    sha256 = "sha256-lTqXTG5ZTPmhCgt+BVzOwjKEIj+bLGUa+IxJq+XtHUg=";
+  };
+
+  cmakeFlags = [
+    "-DKALDI_BUILD_TEST=off"
+    "-DBUILD_SHARED_LIBS=on"
+  ];
+
+  preConfigure = ''
+    mkdir bin
+    cat > bin/git <<'EOF'
+    #!${stdenv.shell}
+    if [[ "$1" == "--version" ]]; then
+      # cmake checks this
+      ${git}/bin/git --version
+    elif [[ "$1" == "clone" ]]; then
+      # mock this call:
+
+      # https://github.com/kaldi-asr/kaldi/blob/c9d8b9ad3fef89237ba5517617d977b7d70a7ed5/cmake/third_party/openfst.cmake#L5
+      cp -r ${openfst} ''${@: -1}
+      chmod -R +w ''${@: -1}
+    elif [[ "$1" == "rev-list" ]]; then
+      # fix up this call:
+      # https://github.com/kaldi-asr/kaldi/blob/c9d8b9ad3fef89237ba5517617d977b7d70a7ed5/cmake/VersionHelper.cmake#L8
+      echo 0
+    fi
+    true
+    EOF
+    chmod +x bin/git
+    export PATH=$(pwd)/bin:$PATH
+  '';
+
+  buildInputs = [
+    openblas
+    openfst
+    icu
+  ];
+
+  nativeBuildInputs = [
+    cmake
+    pkg-config
+    python3
+  ];
+
+  postInstall = ''
+    mkdir -p $out/share/kaldi
+    cp -r ../egs $out/share/kaldi
+  '';
+
+  meta = with lib; {
+    description = "Speech Recognition Toolkit";
+    homepage = "https://kaldi-asr.org";
+    license = licenses.mit;
+    maintainers = with maintainers; [ mic92 ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/pkgs/tools/audio/liquidsoap/full.nix b/pkgs/tools/audio/liquidsoap/full.nix
index 2aa01dfe073..1c52e6796b7 100644
--- a/pkgs/tools/audio/liquidsoap/full.nix
+++ b/pkgs/tools/audio/liquidsoap/full.nix
@@ -1,14 +1,19 @@
-{ stdenv, makeWrapper, fetchurl, which, pkgconfig
+{ lib, stdenv, makeWrapper, fetchurl, which, pkg-config
 , ocamlPackages
-, libao, portaudio, alsaLib, libpulseaudio, libjack2
+, libao, portaudio, alsa-lib, libpulseaudio, libjack2
 , libsamplerate, libmad, taglib, lame, libogg
-, libvorbis, speex, libtheora, libopus, fdk_aac
+, libvorbis, speex, libtheora, libopus, zlib
 , faad2, flac, ladspaH, ffmpeg, frei0r, dssi
 }:
 
 let
   pname = "liquidsoap";
-  version = "1.3.4";
+  version = "1.4.2";
+
+  ocaml-ffmpeg = fetchurl {
+    url = "https://github.com/savonet/ocaml-ffmpeg/releases/download/v0.4.2/ocaml-ffmpeg-0.4.2.tar.gz";
+    sha256 = "1lx5s1avds9fsh77828ifn71r2g89rxakhs8pp995a675phm9viw";
+  };
 
   packageFilters = map (p: "-e '/ocaml-${p}/d'" )
     [ "gstreamer" "shine" "aacplus" "schroedinger"
@@ -19,10 +24,17 @@ stdenv.mkDerivation {
   name = "${pname}-full-${version}";
 
   src = fetchurl {
-    url = "https://github.com/savonet/${pname}/releases/download/${version}/${pname}-${version}-full.tar.bz2";
-    sha256 = "11l1h42sljfxcdhddc8klya4bk99j7a1pndwnzvscb04pvmfmlk0";
+    url = "https://github.com/savonet/${pname}/releases/download/v${version}/${pname}-${version}-full.tar.gz";
+    sha256 = "0wkwnzj1a0vizv7sr1blwk5gzm2qi0n02ndijnq1i50cwrgxs1a4";
   };
 
+  # Use ocaml-srt and ocaml-fdkaac from nixpkgs
+  # Use ocaml-ffmpeg at 0.4.2 for compatibility with ffmpeg 4.3
+  prePatch = ''
+    rm -rf ocaml-srt*/ ocaml-fdkaac*/ ocaml-ffmpeg*/
+    tar xzf ${ocaml-ffmpeg}
+  '';
+
   preConfigure = /* we prefer system-wide libs */ ''
     sed -i "s|gsed|sed|" Makefile
     make bootstrap
@@ -37,20 +49,22 @@ stdenv.mkDerivation {
 
   configureFlags = [ "--localstatedir=/var" ];
 
-  nativeBuildInputs = [ makeWrapper pkgconfig ];
+  nativeBuildInputs = [ makeWrapper pkg-config ];
   buildInputs =
     [ which ocamlPackages.ocaml ocamlPackages.findlib
-      libao portaudio alsaLib libpulseaudio libjack2
+      libao portaudio alsa-lib libpulseaudio libjack2
       libsamplerate libmad taglib lame libogg
-      libvorbis speex libtheora libopus fdk_aac
+      libvorbis speex libtheora libopus zlib
       faad2 flac ladspaH ffmpeg frei0r dssi
       ocamlPackages.xmlm ocamlPackages.ocaml_pcre
       ocamlPackages.camomile
+      ocamlPackages.fdkaac
+      ocamlPackages.srt ocamlPackages.sedlex_2 ocamlPackages.menhir ocamlPackages.menhirLib
     ];
 
   hardeningDisable = [ "format" "fortify" ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Swiss-army knife for multimedia streaming";
     homepage = "https://www.liquidsoap.info/";
     maintainers = with maintainers; [ ehmry ];
diff --git a/pkgs/tools/audio/midicsv/default.nix b/pkgs/tools/audio/midicsv/default.nix
index e5f3f6124b9..cf55e0dd81d 100644
--- a/pkgs/tools/audio/midicsv/default.nix
+++ b/pkgs/tools/audio/midicsv/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ lib, stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
   name = "midicsv-1.1";
@@ -9,14 +9,16 @@ stdenv.mkDerivation rec {
   };
 
   postPatch = ''
-    substituteInPlace Makefile --replace /usr/local $out
+    substituteInPlace Makefile \
+      --replace /usr/local $out \
+      --replace gcc "${stdenv.cc.targetPrefix}cc"
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Losslessly translate MIDI to CSV and back";
     homepage = "http://www.fourmilab.ch/webtools/midicsv/";
     license = licenses.publicDomain;
     maintainers = with maintainers; [ orivej ];
-    platforms = platforms.linux;
+    platforms = platforms.all;
   };
 }
diff --git a/pkgs/tools/audio/mididings/default.nix b/pkgs/tools/audio/mididings/default.nix
index addb95b9f1b..f220fed208f 100644
--- a/pkgs/tools/audio/mididings/default.nix
+++ b/pkgs/tools/audio/mididings/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, pythonPackages, fetchFromGitHub, pkg-config, glib, alsaLib, libjack2  }:
+{ lib, pythonPackages, fetchFromGitHub, pkg-config, glib, alsa-lib, libjack2  }:
 
 pythonPackages.buildPythonApplication {
   version = "2015-11-17";
@@ -12,7 +12,7 @@ pythonPackages.buildPythonApplication {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ glib alsaLib libjack2 pythonPackages.boost ];
+  buildInputs = [ glib alsa-lib libjack2 pythonPackages.boost ];
   propagatedBuildInputs = with pythonPackages; [ decorator ]
     # for livedings
     ++ [ tkinter pyliblo ]
@@ -23,16 +23,16 @@ pythonPackages.buildPythonApplication {
     # so mididings knows where to look for config files
     ++ [ pyxdg ];
 
-  preBuild = with stdenv.lib.versions; ''
+  preBuild = with lib.versions; ''
     substituteInPlace setup.py \
       --replace boost_python "boost_python${major pythonPackages.python.version}${minor pythonPackages.python.version}"
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "A MIDI router and processor based on Python, supporting ALSA and JACK MIDI";
     homepage = "http://das.nasophon.de/mididings";
     license = licenses.gpl2;
-    maintainers = [ maintainers.gnidorah ];
+    maintainers = [ ];
     platforms = platforms.linux;
   };
 }
diff --git a/pkgs/tools/audio/mp3cat/default.nix b/pkgs/tools/audio/mp3cat/default.nix
index e7a1d004a01..dbcc458164d 100644
--- a/pkgs/tools/audio/mp3cat/default.nix
+++ b/pkgs/tools/audio/mp3cat/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub }:
+{ lib, stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   pname = "mp3cat";
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     "install_bin"
   ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "A command line program which concatenates MP3 files";
     longDescription = ''
       A command line program which concatenates MP3 files, mp3cat
diff --git a/pkgs/tools/audio/mpd-mpris/default.nix b/pkgs/tools/audio/mpd-mpris/default.nix
index 79387d9ad1f..b90ab80befd 100644
--- a/pkgs/tools/audio/mpd-mpris/default.nix
+++ b/pkgs/tools/audio/mpd-mpris/default.nix
@@ -1,17 +1,17 @@
-{ stdenv, buildGoModule, fetchFromGitHub }:
+{ lib, buildGoModule, fetchFromGitHub }:
 
 buildGoModule rec {
   pname = "mpd-mpris";
-  version = "0.2.4";
+  version = "0.3.0";
 
   src = fetchFromGitHub {
     owner = "natsukagami";
     repo = pname;
     rev = "v${version}";
-    sha256 = "1cr5j2z2ynj1hwkjzi5amcg59vmgazsci41v6vpsj119g7psjmzm";
+    sha256 = "1kzjbv04b2garb99l64wdq8yksnm4pbhkgyzh89j5j3gb9k55zal";
   };
 
-  vendorSha256 = "108yjymp64iqx1b2wqjbkmbm2w199wq46g7hrmqhcziv6f4aqljp";
+  vendorSha256 = "1ggrqwd3h602rav1dc3amsf4wxsq8mdq4ijkdsg759sqhpzl6rqs";
 
   doCheck = false;
 
@@ -24,11 +24,11 @@ buildGoModule rec {
     cp mpd-mpris.service $out/lib/systemd/user
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "An implementation of the MPRIS protocol for MPD";
     homepage = "https://github.com/natsukagami/mpd-mpris";
     license = licenses.mit;
     maintainers = with maintainers; [ doronbehar ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }
diff --git a/pkgs/tools/audio/mpdas/default.nix b/pkgs/tools/audio/mpdas/default.nix
index 507e62b0dae..8b12b6fc16d 100644
--- a/pkgs/tools/audio/mpdas/default.nix
+++ b/pkgs/tools/audio/mpdas/default.nix
@@ -1,4 +1,10 @@
-{ stdenv, fetchFromGitHub, pkgconfig, mpd_clientlib, curl }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, pkg-config
+, libmpdclient
+, curl
+}:
 
 stdenv.mkDerivation rec {
   pname = "mpdas";
@@ -11,13 +17,13 @@ stdenv.mkDerivation rec {
     sha256 = "0fcqc4w6iwbi1n3cllcgj0k61zffhqkbr8668myxap21m35x8y1r";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ mpd_clientlib curl ];
+  buildInputs = [ libmpdclient curl ];
 
   makeFlags = [ "CONFIG=/etc" "DESTDIR=" "PREFIX=$(out)" ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Music Player Daemon AudioScrobbler";
     homepage = "https://50hz.ws/mpdas/";
     license = licenses.bsd3;
diff --git a/pkgs/tools/audio/mpdcron/default.nix b/pkgs/tools/audio/mpdcron/default.nix
index c083c60a962..afb1c9a3dcd 100644
--- a/pkgs/tools/audio/mpdcron/default.nix
+++ b/pkgs/tools/audio/mpdcron/default.nix
@@ -1,5 +1,19 @@
-{ stdenv, fetchFromGitHub, autoconf, automake, libtool, pkgconfig, glib, libdaemon
-, mpd_clientlib, curl, sqlite, bundlerEnv, libnotify, pandoc }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoconf
+, automake
+, libtool
+, pkg-config
+, glib
+, libdaemon
+, libmpdclient
+, curl
+, sqlite
+, bundlerEnv
+, libnotify
+, pandoc
+}:
 
 let
   gemEnv = bundlerEnv {
@@ -7,8 +21,8 @@ let
     gemdir = ./.;
   };
 in stdenv.mkDerivation {
-  version = "20161228";
   pname = "mpdcron";
+  version = "20161228";
 
   src = fetchFromGitHub {
     owner = "alip";
@@ -17,21 +31,33 @@ in stdenv.mkDerivation {
     sha256 = "0vdksf6lcgmizqr5mqp0bbci259k0dj7gpmhx32md41jlmw5skaw";
   };
 
-  meta = with stdenv.lib; {
-    description = "A cron like daemon for mpd";
-    homepage    = "http://alip.github.io/mpdcron/";
-    license     = licenses.gpl2;
-    platforms   = platforms.unix;
-    maintainers = with maintainers; [ lovek323 manveru ];
-  };
-
-  buildInputs =
-    [ autoconf automake libtool pkgconfig glib libdaemon pandoc
-      mpd_clientlib curl sqlite gemEnv.wrappedRuby libnotify ];
+  buildInputs = [
+    autoconf
+    automake
+    libtool
+    pkg-config
+    glib
+    libdaemon
+    pandoc
+    libmpdclient
+    curl
+    sqlite
+    gemEnv.wrappedRuby
+    libnotify
+  ];
 
   preConfigure = ''
     ./autogen.sh
   '';
 
   configureFlags = [ "--enable-gmodule" "--with-standard-modules=all" ];
+
+  meta = with lib; {
+    description = "A cron like daemon for mpd";
+    homepage    = "http://alip.github.io/mpdcron/";
+    license     = licenses.gpl2Plus;
+    platforms   = platforms.unix;
+    maintainers = with maintainers; [ lovek323 manveru ];
+  };
 }
+# TODO: autoreconfHook this
diff --git a/pkgs/tools/audio/mpdcron/gemset.nix b/pkgs/tools/audio/mpdcron/gemset.nix
index 025eb96b065..836878c9d88 100644
--- a/pkgs/tools/audio/mpdcron/gemset.nix
+++ b/pkgs/tools/audio/mpdcron/gemset.nix
@@ -20,4 +20,4 @@
     };
     version = "1.10.3";
   };
-}
\ No newline at end of file
+}
diff --git a/pkgs/tools/audio/mpdris2/default.nix b/pkgs/tools/audio/mpdris2/default.nix
index 029dcd127f1..4cd3921fb55 100644
--- a/pkgs/tools/audio/mpdris2/default.nix
+++ b/pkgs/tools/audio/mpdris2/default.nix
@@ -1,4 +1,4 @@
-{ stdenv
+{ lib
 , autoreconfHook
 , fetchFromGitHub
 , glib
@@ -45,7 +45,7 @@ python3.pkgs.buildPythonApplication rec {
     pygobject3
   ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "MPRIS 2 support for mpd";
     homepage = "https://github.com/eonpatapon/mpDris2/";
     license = licenses.gpl3;
diff --git a/pkgs/tools/audio/mpris-scrobbler/default.nix b/pkgs/tools/audio/mpris-scrobbler/default.nix
new file mode 100644
index 00000000000..07248213213
--- /dev/null
+++ b/pkgs/tools/audio/mpris-scrobbler/default.nix
@@ -0,0 +1,60 @@
+{ lib, stdenv
+, fetchFromGitHub
+, nix-update-script
+, curl
+, dbus
+, libevent
+, m4
+, meson
+, ninja
+, pkg-config
+, scdoc
+, json_c
+, xdg-utils
+}:
+
+stdenv.mkDerivation rec {
+  pname = "mpris-scrobbler";
+  version = "0.4.0.1";
+
+  src = fetchFromGitHub {
+    owner  = "mariusor";
+    repo   = "mpris-scrobbler";
+    rev    = "v${version}";
+    sha256 = "0jzmgcb9a19hl8y7iwy8l3cc2vgzi0scw7r5q72kszfyxn0yk2gs";
+  };
+
+  postPatch = ''
+    substituteInPlace src/signon.c \
+      --replace "/usr/bin/xdg-open" "${xdg-utils}/bin/xdg-open"
+  '';
+
+  nativeBuildInputs = [
+    m4
+    meson
+    ninja
+    pkg-config
+    scdoc
+  ];
+
+  buildInputs = [
+    curl
+    dbus
+    json_c
+    libevent
+  ];
+
+  passthru = {
+    updateScript = nix-update-script {
+      attrPath = pname;
+    };
+  };
+
+  meta = with lib; {
+    description = "Minimalistic scrobbler for libre.fm & last.fm";
+    homepage    = "https://github.com/mariusor/mpris-scrobbler";
+    license     = licenses.mit;
+    maintainers = with maintainers; [ emantor ];
+    platforms   = platforms.unix;
+  };
+}
diff --git a/pkgs/tools/audio/opl3bankeditor/0001-opl3bankeditor-Look-for-system-installed-Rt-libs.patch b/pkgs/tools/audio/opl3bankeditor/0001-opl3bankeditor-Look-for-system-installed-Rt-libs.patch
new file mode 100644
index 00000000000..36adff53a01
--- /dev/null
+++ b/pkgs/tools/audio/opl3bankeditor/0001-opl3bankeditor-Look-for-system-installed-Rt-libs.patch
@@ -0,0 +1,200 @@
+From 11711398a1ec16f4eaeac8523b77165a560b69cc Mon Sep 17 00:00:00 2001
+From: OPNA2608 <christoph.neidahl@gmail.com>
+Date: Sun, 13 Jun 2021 13:55:53 +0200
+Subject: [PATCH] Look for system-installed Rt libs
+
+---
+ CMakeLists.txt | 159 +++++++++++++++++++++++++++++++------------------
+ 1 file changed, 102 insertions(+), 57 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index f3e53c3..027c1b1 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -50,15 +50,6 @@ message("!! Optional feature summary:")
+ message("!!   RtMidi: ${USE_RTMIDI}")
+ message("!!   RtAudio: ${USE_RTAUDIO}")
+ 
+-if(USE_RTAUDIO)
+-  if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+-    pkg_check_modules(JACK "jack")
+-    message("!!   -- Jack driver: ${JACK_FOUND}")
+-    pkg_check_modules(PULSEAUDIO "libpulse-simple")
+-    message("!!   -- Pulseaudio driver: ${PULSEAUDIO_FOUND}")
+-  endif()
+-endif()
+-
+ if(ENABLE_PLOTS)
+   message("!!   Qwt: ${QWT_LIBRARY}")
+ endif()
+@@ -250,65 +241,119 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+ endif()
+ 
+ if(USE_RTMIDI)
+-  add_library(RtMidi STATIC "src/midi/external/rtmidi/RtMidi.cpp")
+-  target_include_directories(RtMidi PUBLIC "src/midi/external/rtmidi")
+-  if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+-    target_compile_definitions(RtMidi PUBLIC "__LINUX_ALSA__")
+-    target_link_libraries(RtMidi PUBLIC "asound")
+-  elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
+-    target_compile_definitions(RtMidi PUBLIC "__WINDOWS_MM__")
+-    target_link_libraries(RtMidi PUBLIC "winmm")
+-  elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+-    target_compile_definitions(RtMidi PUBLIC "__MACOSX_CORE__")
+-    find_library(COREMIDI_LIBRARY "CoreMIDI")
+-    target_link_libraries(RtMidi PUBLIC "${COREMIDI_LIBRARY}")
++  if(PKG_CONFIG_FOUND)
++    pkg_check_modules(RTMIDI rtmidi)
++    if(RTMIDI_FOUND)
++      message("Using system-installed RtMidi found by pkg-config.")
++      target_link_libraries(OPL3BankEditor PUBLIC ${RTMIDI_LDFLAGS})
++      target_include_directories(OPL3BankEditor PUBLIC ${RTMIDI_INCLUDE_DIRS})
++      target_compile_options(OPL3BankEditor PUBLIC ${RTMIDI_CFLAGS})
++    endif()
+   endif()
++
++  if(NOT RTMIDI_FOUND)
++    find_library(RTMIDI_LIBRARY "rtmidi")
++    find_path(RTMIDI_INCLUDE_DIRS "RtMidi.h")
++    message("RtMidi library: ${RTMIDI_LIBRARY}")
++    message("RtMidi header directory: ${RTMIDI_INCLUDE_DIRS}")
++    if(NOT RTMIDI_LIBRARY-NOTFOUND AND NOT RTMIDI_INCLUDE_DIRS STREQUAL RTMIDI_INCLUDE_DIRS-NOTFOUND)
++      message("Using system-installed RtMidi.")
++      set(RTMIDI_FOUND TRUE)
++      target_link_libraries(OPL3BankEditor PUBLIC ${RTMIDI_LIBRARY})
++      target_include_directories(OPL3BankEditor PUBLIC ${RTMIDI_INCLUDE_DIRS})
++    endif()
++  endif()
++
++  if(NOT RTMIDI_FOUND)
++    message("Using bundled RtMidi.")
++    add_library(RtMidi STATIC "src/midi/external/rtmidi/RtMidi.cpp")
++    target_include_directories(RtMidi PUBLIC "src/midi/external/rtmidi")
++    if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
++      target_compile_definitions(RtMidi PUBLIC "__LINUX_ALSA__")
++      target_link_libraries(RtMidi PUBLIC "asound")
++    elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
++      target_compile_definitions(RtMidi PUBLIC "__WINDOWS_MM__")
++      target_link_libraries(RtMidi PUBLIC "winmm")
++    elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
++      target_compile_definitions(RtMidi PUBLIC "__MACOSX_CORE__")
++      find_library(COREMIDI_LIBRARY "CoreMIDI")
++      target_link_libraries(RtMidi PUBLIC "${COREMIDI_LIBRARY}")
++    endif()
++    target_link_libraries(OPL3BankEditor PRIVATE RtMidi)
++  endif()
++
+   target_sources(OPL3BankEditor PRIVATE "src/midi/midi_rtmidi.cpp")
+   target_compile_definitions(OPL3BankEditor PRIVATE "ENABLE_MIDI")
+-  target_link_libraries(OPL3BankEditor PRIVATE RtMidi)
+ endif()
+ 
+ if(USE_RTAUDIO)
+-  add_library(RtAudio STATIC "src/audio/external/rtaudio/RtAudio.cpp")
+-  target_include_directories(RtAudio PUBLIC "src/audio/external/rtaudio")
+-  if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+-    target_compile_definitions(RtAudio PUBLIC "__LINUX_ALSA__")
+-    target_link_libraries(RtAudio PUBLIC "asound")
+-    if(JACK_FOUND)
+-      target_compile_definitions(RtAudio PUBLIC "__UNIX_JACK__")
+-      target_include_directories(RtAudio PUBLIC ${JACK_INCLUDE_DIRS})
+-      link_directories(${JACK_LIBRARY_DIRS})
+-      target_link_libraries(RtAudio PUBLIC ${JACK_LIBRARIES})
++  if(PKG_CONFIG_FOUND)
++    pkg_check_modules(RTAUDIO rtaudio)
++    if(RTAUDIO_FOUND)
++      message("Using system-installed RtAudio found by pkg-config.")
++      target_link_libraries(OPL3BankEditor PUBLIC ${RTAUDIO_LDFLAGS})
++      target_include_directories(OPL3BankEditor PUBLIC ${RTAUDIO_INCLUDE_DIRS})
++      target_compile_options(OPL3BankEditor PUBLIC ${RTAUDIO_CFLAGS})
++    endif()
++  endif()
++
++  if(NOT RTAUDIO_FOUND)
++    find_library(RTAUDIO_LIBRARY "rtaudio")
++    find_path(RTAUDIO_INCLUDE_DIRS "RtAudio.h")
++    message("RtAudio library: ${RTAUDIO_LIBRARY}")
++    message("RtAudio header directory: ${RTAUDIO_INCLUDE_DIRS}")
++    if(NOT RTAUDIO_LIBRARY-NOTFOUND AND NOT RTAUDIO_INCLUDE_DIRS STREQUAL RTAUDIO_INCLUDE_DIRS-NOTFOUND)
++      message("Using system-installed RtAudio.")
++      set(RTAUDIO_FOUND TRUE)
++      target_link_libraries(OPL3BankEditor PUBLIC ${RTAUDIO_LIBRARY})
++      target_include_directories(OPL3BankEditor PUBLIC ${RTAUDIO_INCLUDE_DIRS})
+     endif()
+-    if(PULSEAUDIO_FOUND)
+-      target_compile_definitions(RtAudio PUBLIC "__LINUX_PULSE__")
+-      target_include_directories(RtAudio PUBLIC ${PULSEAUDIO_INCLUDE_DIRS})
+-      link_directories(${PULSEAUDIO_LIBRARY_DIRS})
+-      target_link_libraries(RtAudio PUBLIC ${PULSEAUDIO_LIBRARIES})
++  endif()
++
++  if(NOT RTAUDIO_FOUND)
++    message("Using bundled RtAudio.")
++    add_library(RtAudio STATIC "src/audio/external/rtaudio/RtAudio.cpp")
++    target_include_directories(RtAudio PUBLIC "src/audio/external/rtaudio")
++    if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
++      target_compile_definitions(RtAudio PUBLIC "__LINUX_ALSA__")
++      target_link_libraries(RtAudio PUBLIC "asound")
++      if(JACK_FOUND)
++        target_compile_definitions(RtAudio PUBLIC "__UNIX_JACK__")
++        target_include_directories(RtAudio PUBLIC ${JACK_INCLUDE_DIRS})
++        link_directories(${JACK_LIBRARY_DIRS})
++        target_link_libraries(RtAudio PUBLIC ${JACK_LIBRARIES})
++      endif()
++      if(PULSEAUDIO_FOUND)
++        target_compile_definitions(RtAudio PUBLIC "__LINUX_PULSE__")
++        target_include_directories(RtAudio PUBLIC ${PULSEAUDIO_INCLUDE_DIRS})
++        link_directories(${PULSEAUDIO_LIBRARY_DIRS})
++        target_link_libraries(RtAudio PUBLIC ${PULSEAUDIO_LIBRARIES})
++      endif()
++    elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
++      target_compile_definitions(RtAudio PUBLIC "__WINDOWS_DS__")
++      target_link_libraries(RtAudio PUBLIC "dsound" "ole32")
++      target_compile_definitions(RtAudio PUBLIC "__WINDOWS_WASAPI__")
++      target_link_libraries(RtAudio PUBLIC "ksguid")
++      target_compile_definitions(RtAudio PUBLIC "__WINDOWS_ASIO__")
++      target_include_directories(RtAudio PRIVATE
++        "src/audio/external/rtaudio/include")
++      target_sources(RtAudio PRIVATE
++        "src/audio/external/rtaudio/include/asio.cpp"
++        "src/audio/external/rtaudio/include/asiodrivers.cpp"
++        "src/audio/external/rtaudio/include/asiolist.cpp"
++        "src/audio/external/rtaudio/include/iasiothiscallresolver.cpp")
++    elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
++      target_compile_definitions(RtAudio PUBLIC "__MACOSX_CORE__")
++      find_library(COREAUDIO_LIBRARY "CoreAudio")
++      target_link_libraries(RtAudio PUBLIC "${COREAUDIO_LIBRARY}")
++      find_library(COREFOUNDATION_LIBRARY "CoreFoundation")
++      target_link_libraries(RtAudio PUBLIC "${COREFOUNDATION_LIBRARY}")
+     endif()
+-  elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
+-    target_compile_definitions(RtAudio PUBLIC "__WINDOWS_DS__")
+-    target_link_libraries(RtAudio PUBLIC "dsound" "ole32")
+-    target_compile_definitions(RtAudio PUBLIC "__WINDOWS_WASAPI__")
+-    target_link_libraries(RtAudio PUBLIC "ksguid")
+-    target_compile_definitions(RtAudio PUBLIC "__WINDOWS_ASIO__")
+-    target_include_directories(RtAudio PRIVATE
+-      "src/audio/external/rtaudio/include")
+-    target_sources(RtAudio PRIVATE
+-      "src/audio/external/rtaudio/include/asio.cpp"
+-      "src/audio/external/rtaudio/include/asiodrivers.cpp"
+-      "src/audio/external/rtaudio/include/asiolist.cpp"
+-      "src/audio/external/rtaudio/include/iasiothiscallresolver.cpp")
+-  elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+-    target_compile_definitions(RtAudio PUBLIC "__MACOSX_CORE__")
+-    find_library(COREAUDIO_LIBRARY "CoreAudio")
+-    target_link_libraries(RtAudio PUBLIC "${COREAUDIO_LIBRARY}")
+-    find_library(COREFOUNDATION_LIBRARY "CoreFoundation")
+-    target_link_libraries(RtAudio PUBLIC "${COREFOUNDATION_LIBRARY}")
++    target_link_libraries(OPL3BankEditor PRIVATE RtAudio)
+   endif()
++
+   target_sources(OPL3BankEditor PRIVATE "src/audio/ao_rtaudio.cpp")
+   target_compile_definitions(OPL3BankEditor PRIVATE "ENABLE_AUDIO_TESTING")
+-  target_link_libraries(OPL3BankEditor PRIVATE RtAudio)
+ endif()
+ 
+ add_executable(measurer_tool
+-- 
+2.29.3
+
diff --git a/pkgs/tools/audio/opl3bankeditor/0001-opn2bankeditor-Look-for-system-installed-Rt-libs.patch b/pkgs/tools/audio/opl3bankeditor/0001-opn2bankeditor-Look-for-system-installed-Rt-libs.patch
new file mode 100644
index 00000000000..f62c3236b33
--- /dev/null
+++ b/pkgs/tools/audio/opl3bankeditor/0001-opn2bankeditor-Look-for-system-installed-Rt-libs.patch
@@ -0,0 +1,200 @@
+From 69c993dacc7dc0cb9d105c3dfa764cd7be5c343e Mon Sep 17 00:00:00 2001
+From: OPNA2608 <christoph.neidahl@gmail.com>
+Date: Sun, 13 Jun 2021 14:21:17 +0200
+Subject: [PATCH] Look for system-installed Rt libs
+
+---
+ CMakeLists.txt | 159 +++++++++++++++++++++++++++++++------------------
+ 1 file changed, 102 insertions(+), 57 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index f428dc4..18ba8c3 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -41,15 +41,6 @@ message("!! Optional feature summary:")
+ message("!!   RtMidi: ${USE_RTMIDI}")
+ message("!!   RtAudio: ${USE_RTAUDIO}")
+ 
+-if(USE_RTAUDIO)
+-  if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+-    pkg_check_modules(JACK "jack")
+-    message("!!   -- Jack driver: ${JACK_FOUND}")
+-    pkg_check_modules(PULSEAUDIO "libpulse-simple")
+-    message("!!   -- Pulseaudio driver: ${PULSEAUDIO_FOUND}")
+-  endif()
+-endif()
+-
+ if(ENABLE_PLOTS)
+   message("!!   Qwt: ${QWT_LIBRARY}")
+ endif()
+@@ -198,65 +189,119 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+ endif()
+ 
+ if(USE_RTMIDI)
+-  add_library(RtMidi STATIC "src/midi/external/rtmidi/RtMidi.cpp")
+-  target_include_directories(RtMidi PUBLIC "src/midi/external/rtmidi")
+-  if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+-    target_compile_definitions(RtMidi PUBLIC "__LINUX_ALSA__")
+-    target_link_libraries(RtMidi PUBLIC "asound")
+-  elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
+-    target_compile_definitions(RtMidi PUBLIC "__WINDOWS_MM__")
+-    target_link_libraries(RtMidi PUBLIC "winmm")
+-  elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+-    target_compile_definitions(RtMidi PUBLIC "__MACOSX_CORE__")
+-    find_library(COREMIDI_LIBRARY "CoreMIDI")
+-    target_link_libraries(RtMidi PUBLIC "${COREMIDI_LIBRARY}")
++  if(PKG_CONFIG_FOUND)
++    pkg_check_modules(RTMIDI rtmidi)
++    if(RTMIDI_FOUND)
++      message("Using system-installed RtMidi found by pkg-config.")
++      target_link_libraries(OPN2BankEditor PUBLIC ${RTMIDI_LDFLAGS})
++      target_include_directories(OPN2BankEditor PUBLIC ${RTMIDI_INCLUDE_DIRS})
++      target_compile_options(OPN2BankEditor PUBLIC ${RTMIDI_CFLAGS})
++    endif()
++  endif()
++
++  if(NOT RTMIDI_FOUND)
++    find_library(RTMIDI_LIBRARY "rtmidi")
++    find_path(RTMIDI_INCLUDE_DIRS "RtMidi.h")
++    message("RtMidi library: ${RTMIDI_LIBRARY}")
++    message("RtMidi header directory: ${RTMIDI_INCLUDE_DIRS}")
++    if(NOT RTMIDI_LIBRARY-NOTFOUND AND NOT RTMIDI_INCLUDE_DIRS STREQUAL RTMIDI_INCLUDE_DIRS-NOTFOUND)
++      message("Using system-installed RtMidi.")
++      set(RTMIDI_FOUND TRUE)
++      target_link_libraries(OPN2BankEditor PUBLIC ${RTMIDI_LIBRARY})
++      target_include_directories(OPN2BankEditor PUBLIC ${RTMIDI_INCLUDE_DIRS})
++    endif()
++  endif()
++
++  if(NOT RTMIDI_FOUND)
++    message("Using bundled RtMidi.")
++    add_library(RtMidi STATIC "src/midi/external/rtmidi/RtMidi.cpp")
++    target_include_directories(RtMidi PUBLIC "src/midi/external/rtmidi")
++    if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
++      target_compile_definitions(RtMidi PUBLIC "__LINUX_ALSA__")
++      target_link_libraries(RtMidi PUBLIC "asound")
++    elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
++      target_compile_definitions(RtMidi PUBLIC "__WINDOWS_MM__")
++      target_link_libraries(RtMidi PUBLIC "winmm")
++    elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
++      target_compile_definitions(RtMidi PUBLIC "__MACOSX_CORE__")
++      find_library(COREMIDI_LIBRARY "CoreMIDI")
++      target_link_libraries(RtMidi PUBLIC "${COREMIDI_LIBRARY}")
++    endif()
++    target_link_libraries(OPN2BankEditor PRIVATE RtMidi)
+   endif()
++
+   target_sources(OPN2BankEditor PRIVATE "src/midi/midi_rtmidi.cpp")
+   target_compile_definitions(OPN2BankEditor PRIVATE "ENABLE_MIDI")
+-  target_link_libraries(OPN2BankEditor PRIVATE RtMidi)
+ endif()
+ 
+ if(USE_RTAUDIO)
+-  add_library(RtAudio STATIC "src/audio/external/rtaudio/RtAudio.cpp")
+-  target_include_directories(RtAudio PUBLIC "src/audio/external/rtaudio")
+-  if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+-    target_compile_definitions(RtAudio PUBLIC "__LINUX_ALSA__")
+-    target_link_libraries(RtAudio PUBLIC "asound")
+-    if(JACK_FOUND)
+-      target_compile_definitions(RtAudio PUBLIC "__UNIX_JACK__")
+-      target_include_directories(RtAudio PUBLIC ${JACK_INCLUDE_DIRS})
+-      link_directories(${JACK_LIBRARY_DIRS})
+-      target_link_libraries(RtAudio PUBLIC ${JACK_LIBRARIES})
++  if(PKG_CONFIG_FOUND)
++    pkg_check_modules(RTAUDIO rtaudio)
++    if(RTAUDIO_FOUND)
++      message("Using system-installed RtAudio found by pkg-config.")
++      target_link_libraries(OPN2BankEditor PUBLIC ${RTAUDIO_LDFLAGS})
++      target_include_directories(OPN2BankEditor PUBLIC ${RTAUDIO_INCLUDE_DIRS})
++      target_compile_options(OPN2BankEditor PUBLIC ${RTAUDIO_CFLAGS})
+     endif()
+-    if(PULSEAUDIO_FOUND)
+-      target_compile_definitions(RtAudio PUBLIC "__LINUX_PULSE__")
+-      target_include_directories(RtAudio PUBLIC ${PULSEAUDIO_INCLUDE_DIRS})
+-      link_directories(${PULSEAUDIO_LIBRARY_DIRS})
+-      target_link_libraries(RtAudio PUBLIC ${PULSEAUDIO_LIBRARIES})
++  endif()
++
++  if(NOT RTAUDIO_FOUND)
++    find_library(RTAUDIO_LIBRARY "rtaudio")
++    find_path(RTAUDIO_INCLUDE_DIRS "RtAudio.h")
++    message("RtAudio library: ${RTAUDIO_LIBRARY}")
++    message("RtAudio header directory: ${RTAUDIO_INCLUDE_DIRS}")
++    if(NOT RTAUDIO_LIBRARY-NOTFOUND AND NOT RTAUDIO_INCLUDE_DIRS STREQUAL RTAUDIO_INCLUDE_DIRS-NOTFOUND)
++      message("Using system-installed RtAudio.")
++      set(RTAUDIO_FOUND TRUE)
++      target_link_libraries(OPN2BankEditor PUBLIC ${RTAUDIO_LIBRARY})
++      target_include_directories(OPN2BankEditor PUBLIC ${RTAUDIO_INCLUDE_DIRS})
+     endif()
+-  elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
+-    target_compile_definitions(RtAudio PUBLIC "__WINDOWS_DS__")
+-    target_link_libraries(RtAudio PUBLIC "dsound" "ole32")
+-    target_compile_definitions(RtAudio PUBLIC "__WINDOWS_WASAPI__")
+-    target_link_libraries(RtAudio PUBLIC "ksguid")
+-    target_compile_definitions(RtAudio PUBLIC "__WINDOWS_ASIO__")
+-    target_include_directories(RtAudio PRIVATE
+-      "src/audio/external/rtaudio/include")
+-    target_sources(RtAudio PRIVATE
+-      "src/audio/external/rtaudio/include/asio.cpp"
+-      "src/audio/external/rtaudio/include/asiodrivers.cpp"
+-      "src/audio/external/rtaudio/include/asiolist.cpp"
+-      "src/audio/external/rtaudio/include/iasiothiscallresolver.cpp")
+-  elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+-    target_compile_definitions(RtAudio PUBLIC "__MACOSX_CORE__")
+-    find_library(COREAUDIO_LIBRARY "CoreAudio")
+-    target_link_libraries(RtAudio PUBLIC "${COREAUDIO_LIBRARY}")
+-    find_library(COREFOUNDATION_LIBRARY "CoreFoundation")
+-    target_link_libraries(RtAudio PUBLIC "${COREFOUNDATION_LIBRARY}")
+   endif()
++
++  if(NOT RTAUDIO_FOUND)
++    message("Using bundled RtAudio.")
++    add_library(RtAudio STATIC "src/audio/external/rtaudio/RtAudio.cpp")
++    target_include_directories(RtAudio PUBLIC "src/audio/external/rtaudio")
++    if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
++      target_compile_definitions(RtAudio PUBLIC "__LINUX_ALSA__")
++      target_link_libraries(RtAudio PUBLIC "asound")
++      if(JACK_FOUND)
++        target_compile_definitions(RtAudio PUBLIC "__UNIX_JACK__")
++        target_include_directories(RtAudio PUBLIC ${JACK_INCLUDE_DIRS})
++        link_directories(${JACK_LIBRARY_DIRS})
++        target_link_libraries(RtAudio PUBLIC ${JACK_LIBRARIES})
++      endif()
++      if(PULSEAUDIO_FOUND)
++        target_compile_definitions(RtAudio PUBLIC "__LINUX_PULSE__")
++        target_include_directories(RtAudio PUBLIC ${PULSEAUDIO_INCLUDE_DIRS})
++        link_directories(${PULSEAUDIO_LIBRARY_DIRS})
++        target_link_libraries(RtAudio PUBLIC ${PULSEAUDIO_LIBRARIES})
++      endif()
++    elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
++      target_compile_definitions(RtAudio PUBLIC "__WINDOWS_DS__")
++      target_link_libraries(RtAudio PUBLIC "dsound" "ole32")
++      target_compile_definitions(RtAudio PUBLIC "__WINDOWS_WASAPI__")
++      target_link_libraries(RtAudio PUBLIC "ksguid")
++      target_compile_definitions(RtAudio PUBLIC "__WINDOWS_ASIO__")
++      target_include_directories(RtAudio PRIVATE
++        "src/audio/external/rtaudio/include")
++      target_sources(RtAudio PRIVATE
++        "src/audio/external/rtaudio/include/asio.cpp"
++        "src/audio/external/rtaudio/include/asiodrivers.cpp"
++        "src/audio/external/rtaudio/include/asiolist.cpp"
++        "src/audio/external/rtaudio/include/iasiothiscallresolver.cpp")
++    elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
++      target_compile_definitions(RtAudio PUBLIC "__MACOSX_CORE__")
++      find_library(COREAUDIO_LIBRARY "CoreAudio")
++      target_link_libraries(RtAudio PUBLIC "${COREAUDIO_LIBRARY}")
++      find_library(COREFOUNDATION_LIBRARY "CoreFoundation")
++      target_link_libraries(RtAudio PUBLIC "${COREFOUNDATION_LIBRARY}")
++    endif()
++    target_link_libraries(OPN2BankEditor PRIVATE RtAudio)
++  endif()
++
+   target_sources(OPN2BankEditor PRIVATE "src/audio/ao_rtaudio.cpp")
+   target_compile_definitions(OPN2BankEditor PRIVATE "ENABLE_AUDIO_TESTING")
+-  target_link_libraries(OPN2BankEditor PRIVATE RtAudio)
+ endif()
+ 
+ add_executable(measurer_tool
+-- 
+2.29.3
+
diff --git a/pkgs/tools/audio/opl3bankeditor/common.nix b/pkgs/tools/audio/opl3bankeditor/common.nix
new file mode 100644
index 00000000000..9f6972ce954
--- /dev/null
+++ b/pkgs/tools/audio/opl3bankeditor/common.nix
@@ -0,0 +1,69 @@
+{ pname, chip, version, sha256, extraPatches ? [] }:
+
+{ mkDerivation
+, stdenv
+, lib
+, fetchFromGitHub
+, dos2unix
+, cmake
+, pkg-config
+, qttools
+, qtbase
+, qwt
+, rtaudio
+, rtmidi
+}:
+
+let
+  binname = "${chip} Bank Editor";
+  mainProgram = "${lib.strings.toLower chip}_bank_editor";
+in
+mkDerivation rec {
+  inherit pname version;
+
+  src = fetchFromGitHub {
+    owner = "Wohlstand";
+    repo = pname;
+    rev = "v${version}";
+    inherit sha256;
+  };
+
+  prePatch = ''
+    dos2unix CMakeLists.txt
+  '';
+
+  patches = extraPatches;
+
+  nativeBuildInputs = [
+    dos2unix
+    cmake
+    pkg-config
+    qttools
+  ];
+
+  buildInputs = [
+    qtbase
+    qwt
+    rtaudio
+    rtmidi
+  ];
+
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
+    mkdir $out/{bin,Applications}
+    mv "${binname}.app" $out/Applications/
+
+    install_name_tool -change {,${qwt}/lib/}libqwt.6.dylib "$out/Applications/${binname}.app/Contents/MacOS/${binname}"
+    wrapQtApp "$out/Applications/${binname}.app/Contents/MacOS/${binname}"
+
+    ln -s "$out/Applications/${binname}.app/Contents/MacOS/${binname}" $out/bin/${mainProgram}
+  '';
+
+  meta = with lib; {
+    inherit mainProgram;
+    description = "A small cross-platform editor of the ${chip} FM banks of different formats";
+    homepage = src.meta.homepage;
+    license = licenses.gpl3Plus;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ OPNA2608 ];
+  };
+}
diff --git a/pkgs/tools/audio/opl3bankeditor/default.nix b/pkgs/tools/audio/opl3bankeditor/default.nix
index 381591edb02..85762bb69b9 100644
--- a/pkgs/tools/audio/opl3bankeditor/default.nix
+++ b/pkgs/tools/audio/opl3bankeditor/default.nix
@@ -1,27 +1,9 @@
-{ stdenv, mkDerivation, fetchFromGitHub, cmake, qttools, alsaLib }:
-
-mkDerivation rec {
+import ./common.nix rec {
+  pname = "opl3bankeditor";
+  chip = "OPL3";
   version = "1.5.1";
-  pname = "OPL3BankEditor";
-
-  src = fetchFromGitHub {
-    owner = "Wohlstand";
-    repo = pname;
-    rev = "v${version}";
-    sha256 = "1g59qrkcm4xnyxx0s2x28brqbf2ix6vriyx12pcdvfhhcdi55hxh";
-    fetchSubmodules = true;
-  };
-
-  buildInputs = [
-    alsaLib qttools
+  sha256 = "08krbxlxgmc7i2r2k6d6wgi0m6k8hh3j60xf21kz4kp023w613sa";
+  extraPatches = [
+    ./0001-opl3bankeditor-Look-for-system-installed-Rt-libs.patch
   ];
-  nativeBuildInputs = [ cmake ];
-
-  meta = with stdenv.lib; {
-    description = "A small cross-platform editor of the OPL3 FM banks of different formats";
-    homepage = src.meta.homepage;
-    license = licenses.gpl3;
-    platforms = platforms.linux;
-    maintainers = with maintainers; [ gnidorah ];
-  };
 }
diff --git a/pkgs/tools/audio/opl3bankeditor/opn2bankeditor.nix b/pkgs/tools/audio/opl3bankeditor/opn2bankeditor.nix
index 1d10452470e..d9c4bbe1511 100644
--- a/pkgs/tools/audio/opl3bankeditor/opn2bankeditor.nix
+++ b/pkgs/tools/audio/opl3bankeditor/opn2bankeditor.nix
@@ -1,14 +1,9 @@
-{ opl3bankeditor, fetchFromGitHub }:
-
-opl3bankeditor.overrideAttrs (oldAttrs: rec {
+import ./common.nix rec {
+  pname = "opn2bankeditor";
+  chip = "OPN2";
   version = "1.3";
-  pname = "OPN2BankEditor";
-
-  src = fetchFromGitHub {
-    owner = "Wohlstand";
-    repo = pname;
-    rev = "v${version}";
-    sha256 = "0xsvv0gxqh1lx22f1jm384f7mq1jp57fmpsx1jjaxz435w5hf8s0";
-    fetchSubmodules = true;
-  };
-})
+  sha256 = "0niam6a6y57msbl0xj23g6l7gisv4a670q0k1zqfm34804532a32";
+  extraPatches = [
+    ./0001-opn2bankeditor-Look-for-system-installed-Rt-libs.patch
+  ];
+}
diff --git a/pkgs/tools/audio/pa-applet/default.nix b/pkgs/tools/audio/pa-applet/default.nix
index 69e5976e6d5..358e662ca1e 100644
--- a/pkgs/tools/audio/pa-applet/default.nix
+++ b/pkgs/tools/audio/pa-applet/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, libpulseaudio, pkgconfig, gtk3, glibc, autoconf, automake, libnotify, libX11, xf86inputevdev }:
+{ lib, stdenv, fetchgit, libpulseaudio, pkg-config, gtk3, glibc, autoconf, automake, libnotify, libX11, xf86inputevdev }:
 
 stdenv.mkDerivation {
   name = "pa-applet-2012-04-11";
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
     sha256 = "1242sdri67wnm1cd0hr40mxarkh7qs7mb9n2m0g9dbz0f4axj6wa";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [
     gtk3 libpulseaudio glibc automake autoconf libnotify libX11 xf86inputevdev
   ];
@@ -21,10 +21,9 @@ stdenv.mkDerivation {
   # work around a problem related to gtk3 updates
   NIX_CFLAGS_COMPILE = "-Wno-error=deprecated-declarations";
 
-  postInstall = ''
-  '';
+  postInstall = "";
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "";
     license = licenses.gpl2;
     maintainers = with maintainers; [ domenkozar ];
diff --git a/pkgs/tools/audio/pasystray/default.nix b/pkgs/tools/audio/pasystray/default.nix
index 8b0580ba98c..2bedd2abacd 100644
--- a/pkgs/tools/audio/pasystray/default.nix
+++ b/pkgs/tools/audio/pasystray/default.nix
@@ -1,5 +1,5 @@
-{ stdenv, fetchFromGitHub, pkgconfig, autoreconfHook, wrapGAppsHook
-, gnome3, avahi, gtk3, libappindicator-gtk3, libnotify, libpulseaudio
+{ lib, stdenv, fetchpatch, fetchFromGitHub, pkg-config, autoreconfHook, wrapGAppsHook
+, gnome, avahi, gtk3, libayatana-appindicator-gtk3, libnotify, libpulseaudio
 , xlibsWrapper, gsettings-desktop-schemas
 }:
 
@@ -17,16 +17,22 @@ stdenv.mkDerivation rec {
   patches = [
     # https://github.com/christophgysin/pasystray/issues/90#issuecomment-306190701
     ./fix-wayland.patch
+
+    # https://github.com/christophgysin/pasystray/issues/98
+    (fetchpatch {
+      url = "https://sources.debian.org/data/main/p/pasystray/0.7.1-1/debian/patches/0001-Build-against-ayatana-appindicator.patch";
+      sha256 = "0hijphrf52n2zfwdnrmxlp3a7iwznnkb79awvpzplz0ia2lqywpw";
+    })
   ];
 
-  nativeBuildInputs = [ pkgconfig autoreconfHook wrapGAppsHook ];
+  nativeBuildInputs = [ pkg-config autoreconfHook wrapGAppsHook ];
   buildInputs = [
-    gnome3.adwaita-icon-theme
-    avahi gtk3 libappindicator-gtk3 libnotify libpulseaudio xlibsWrapper
+    gnome.adwaita-icon-theme
+    avahi gtk3 libayatana-appindicator-gtk3 libnotify libpulseaudio xlibsWrapper
     gsettings-desktop-schemas
   ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "PulseAudio system tray";
     homepage = "https://github.com/christophgysin/pasystray";
     license = licenses.lgpl21Plus;
diff --git a/pkgs/tools/audio/patray/default.nix b/pkgs/tools/audio/patray/default.nix
new file mode 100644
index 00000000000..5f86f1b8855
--- /dev/null
+++ b/pkgs/tools/audio/patray/default.nix
@@ -0,0 +1,43 @@
+{ lib
+, python3
+, qt5
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "patray";
+  version = "0.1.1";
+
+  src = python3.pkgs.fetchPypi {
+    inherit version pname;
+    sha256 = "0vaapn2p4257m1d5nbnwnh252b7lhl00560gr9pqh2b7xqm1bh6g";
+  };
+
+  patchPhase = ''
+    sed -i '30i entry_points = { "console_scripts": [ "patray = patray.__main__:main" ] },' setup.py
+    sed -i 's/production.txt/production.in/' setup.py
+    sed -i '/pyside2/d' requirements/production.in
+  '';
+
+  propagatedBuildInputs = with python3.pkgs; [
+    pulsectl
+    loguru
+    cock
+    pyside2
+  ];
+
+  doCheck = false;
+
+  nativeBuildInputs = [ qt5.wrapQtAppsHook ];
+  postFixup = ''
+    wrapQtApp $out/bin/patray
+  '';
+
+
+
+  meta = with lib; {
+    description = "Yet another tray pulseaudio frontend";
+    homepage = "https://github.com/pohmelie/patray";
+    license = licenses.mit;
+    maintainers = with maintainers; [ domenkozar ];
+  };
+}
diff --git a/pkgs/tools/audio/picotts/default.nix b/pkgs/tools/audio/picotts/default.nix
index 023bf457774..03f446dc215 100644
--- a/pkgs/tools/audio/picotts/default.nix
+++ b/pkgs/tools/audio/picotts/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, autoconf, automake, libtool, popt }:
+{ lib, stdenv, fetchFromGitHub, autoconf, automake, libtool, popt }:
 
 stdenv.mkDerivation {
   name = "picotts-unstable-2018-10-19";
@@ -13,11 +13,11 @@ stdenv.mkDerivation {
   sourceRoot = "source/pico";
   preConfigure = "./autogen.sh";
   meta = {
-    description = "Text to speech voice sinthesizer from SVox.";
+    description = "Text to speech voice sinthesizer from SVox";
     homepage = "https://github.com/naggety/picotts";
-    license = stdenv.lib.licenses.asl20;
-    maintainers = [ stdenv.lib.maintainers.canndrew ];
-    platforms = stdenv.lib.platforms.linux;
+    license = lib.licenses.asl20;
+    maintainers = [ lib.maintainers.canndrew ];
+    platforms = lib.platforms.linux;
   };
 }
 
diff --git a/pkgs/tools/audio/playerctl/default.nix b/pkgs/tools/audio/playerctl/default.nix
index c1cddf12b65..15ebb93e4e8 100644
--- a/pkgs/tools/audio/playerctl/default.nix
+++ b/pkgs/tools/audio/playerctl/default.nix
@@ -1,22 +1,22 @@
-{ stdenv, meson, ninja, fetchFromGitHub, glib, pkgconfig, gtk-doc, docbook_xsl, gobject-introspection }:
+{ lib, stdenv, meson, ninja, fetchFromGitHub, glib, pkg-config, gtk-doc, docbook_xsl, gobject-introspection }:
 
 stdenv.mkDerivation rec {
   pname = "playerctl";
-  version = "2.2.1";
+  version = "2.3.1";
 
   src = fetchFromGitHub {
     owner = "acrisci";
     repo = "playerctl";
     rev = "v${version}";
-    sha256 = "17hi33sw3663qz5v54bqqil31sgkrlxkb2l5bgqk87pac6x2wnbz";
+    sha256 = "00z5c6amlxd3q42l7x8i0ngl627dxglgg5vikbbhjp9ms34xbxdn";
   };
 
-  nativeBuildInputs = [ meson ninja pkgconfig gtk-doc docbook_xsl gobject-introspection ];
+  nativeBuildInputs = [ meson ninja pkg-config gtk-doc docbook_xsl gobject-introspection ];
   buildInputs = [ glib ];
 
   mesonFlags = [ "-Dbash-completions=true" ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Command-line utility and library for controlling media players that implement MPRIS";
     homepage = "https://github.com/acrisci/playerctl";
     license = licenses.lgpl3;
diff --git a/pkgs/tools/audio/pnmixer/default.nix b/pkgs/tools/audio/pnmixer/default.nix
index c1e40ae5dbb..da4654a3e5f 100644
--- a/pkgs/tools/audio/pnmixer/default.nix
+++ b/pkgs/tools/audio/pnmixer/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, cmake, pkgconfig, gettext, alsaLib, gtk3, glib, libnotify, libX11, pcre }:
+{ lib, stdenv, fetchFromGitHub, cmake, pkg-config, gettext, alsa-lib, gtk3, glib, libnotify, libX11, pcre }:
 
 stdenv.mkDerivation rec {
   pname = "pnmixer";
@@ -11,11 +11,11 @@ stdenv.mkDerivation rec {
     sha256 = "0416pa933ddf4b7ph9zxhk5jppkk7ppcq1aqph6xsrfnka4yb148";
   };
 
-  nativeBuildInputs = [ cmake pkgconfig gettext ];
+  nativeBuildInputs = [ cmake pkg-config gettext ];
 
-  buildInputs = [ alsaLib gtk3 glib libnotify libX11 pcre ];
+  buildInputs = [ alsa-lib gtk3 glib libnotify libX11 pcre ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "https://github.com/nicklan/pnmixer";
     description = "ALSA volume mixer for the system tray";
     license = licenses.gpl3;
diff --git a/pkgs/tools/audio/pulsemixer/default.nix b/pkgs/tools/audio/pulsemixer/default.nix
index b735c40031f..e6fc0c03e89 100644
--- a/pkgs/tools/audio/pulsemixer/default.nix
+++ b/pkgs/tools/audio/pulsemixer/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, python3, libpulseaudio }:
+{ lib, stdenv, fetchFromGitHub, python3, libpulseaudio }:
 
 stdenv.mkDerivation rec {
   pname = "pulsemixer";
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
       --replace "libpulse.so.0" "$libpulseaudio/lib/libpulse.so.0"
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Cli and curses mixer for pulseaudio";
     homepage = "https://github.com/GeorgeFilipkin/pulsemixer";
     license = licenses.mit;
diff --git a/pkgs/tools/audio/qastools/default.nix b/pkgs/tools/audio/qastools/default.nix
index 86ef7f050b2..f8b705a8fa1 100644
--- a/pkgs/tools/audio/qastools/default.nix
+++ b/pkgs/tools/audio/qastools/default.nix
@@ -1,18 +1,18 @@
-{ mkDerivation, lib, fetchFromGitLab, cmake, alsaLib, udev, qtbase, qtsvg, qttools }:
+{ mkDerivation, lib, fetchFromGitLab, cmake, alsa-lib, udev, qtbase, qtsvg, qttools }:
 
 mkDerivation rec {
   pname = "qastools";
-  version = "0.22.0";
+  version = "0.23.0";
 
   src = fetchFromGitLab {
     owner = "sebholt";
     repo = pname;
     rev = "v${version}";
-    sha256 = "0px4fcn8dagivq5fyi5gy84yj86f6x0lk805mc4ry58d0wsbn68v";
+    sha256 = "19hn64hnvryfmrkdg6rqyzahdbqf1s5y3dcca389jj6sdx93b3ip";
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ alsaLib udev qtbase qtsvg qttools ];
+  buildInputs = [ alsa-lib udev qtbase qtsvg qttools ];
 
   meta = with lib; {
     description = "Collection of desktop applications for ALSA configuration";
diff --git a/pkgs/tools/audio/spotdl/default.nix b/pkgs/tools/audio/spotdl/default.nix
new file mode 100644
index 00000000000..71e8615a114
--- /dev/null
+++ b/pkgs/tools/audio/spotdl/default.nix
@@ -0,0 +1,52 @@
+{ lib
+, python3
+, fetchFromGitHub
+, ffmpeg
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "spotdl";
+  version = "3.6.3";
+
+  src = fetchFromGitHub {
+    owner = "spotDL";
+    repo = "spotify-downloader";
+    rev = "v${version}";
+    sha256 = "sha256-Ok8DOw+Joy35IqN7sNOQcUWYJS8tqBeQ5/I8fUSly7Q=";
+  };
+
+  propagatedBuildInputs = with python3.pkgs; [
+    spotipy
+    pytube
+    rich
+    rapidfuzz
+    mutagen
+    ytmusicapi
+    tqdm
+    beautifulsoup4
+    requests
+    unidecode
+  ];
+
+  checkInputs = with python3.pkgs; [
+    pytestCheckHook
+    pytest-mock
+    pytest-vcr
+    pyfakefs
+    pytest-subprocess
+  ];
+
+  # requires networking
+  doCheck = false;
+
+  makeWrapperArgs = [
+    "--prefix" "PATH" ":" (lib.makeBinPath [ ffmpeg ])
+  ];
+
+  meta = with lib; {
+    description = "Download your Spotify playlists and songs along with album art and metadata";
+    homepage = "https://github.com/spotDL/spotify-downloader";
+    license = licenses.mit;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}
diff --git a/pkgs/tools/audio/stt/default.nix b/pkgs/tools/audio/stt/default.nix
new file mode 100644
index 00000000000..7834f87a051
--- /dev/null
+++ b/pkgs/tools/audio/stt/default.nix
@@ -0,0 +1,34 @@
+{ stdenv, lib, fetchurl, autoPatchelfHook }:
+
+stdenv.mkDerivation rec {
+  pname = "stt";
+  version = "0.9.3";
+
+  src = fetchurl {
+    url = "https://github.com/coqui-ai/STT/releases/download/v${version}/native_client.tf.Linux.tar.xz";
+    sha256 = "0axwys8vis4f0m7d1i2r3dfqlc8p3yj2nisvc7pdi5qs741xgy8w";
+  };
+  setSourceRoot = "sourceRoot=`pwd`";
+
+  nativeBuildInputs = [
+    autoPatchelfHook
+  ];
+
+  buildInputs = [
+    stdenv.cc.cc.lib
+  ];
+
+  installPhase = ''
+    install -D stt $out/bin/stt
+    install -D coqui-stt.h $out/include/coqui-stt.h
+    install -D libstt.so $out/lib/libstt.so
+  '';
+
+  meta = with lib; {
+    homepage = https://github.com/coqui-ai/STT;
+    description = "Deep learning toolkit for Speech-to-Text, battle-tested in research and production";
+    license = licenses.mpl20;
+    platforms = [ "x86_64-linux" ];
+    maintainers = with maintainers; [ rvolosatovs ];
+  };
+}
diff --git a/pkgs/tools/audio/trx/default.nix b/pkgs/tools/audio/trx/default.nix
index 6a23b6caead..b3ffee6419b 100644
--- a/pkgs/tools/audio/trx/default.nix
+++ b/pkgs/tools/audio/trx/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, alsaLib, libopus, ortp, bctoolbox }:
+{ lib, stdenv, fetchurl, alsa-lib, libopus, ortp, bctoolbox }:
 
 stdenv.mkDerivation rec {
   pname = "trx";
@@ -15,10 +15,10 @@ stdenv.mkDerivation rec {
     ./add_bctoolbox_ldlib.patch
   ];
 
-  buildInputs = [ alsaLib libopus ortp bctoolbox ];
+  buildInputs = [ alsa-lib libopus ortp bctoolbox ];
   makeFlags = [ "PREFIX=$(out)" ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "A simple toolset for broadcasting live audio using RTP/UDP and Opus";
     homepage = "http://www.pogo.org.uk/~mark/trx/";
     license = licenses.gpl2;
diff --git a/pkgs/tools/audio/tts/default.nix b/pkgs/tools/audio/tts/default.nix
new file mode 100644
index 00000000000..bb5eda93a59
--- /dev/null
+++ b/pkgs/tools/audio/tts/default.nix
@@ -0,0 +1,121 @@
+{ lib
+, python3
+, fetchFromGitHub
+, fetchpatch
+}:
+
+# USAGE:
+# $ tts-server --list_models
+# # pick your favorite vocoder/tts model
+# $ tts-server --model_name tts_models/en/ljspeech/glow-tts --vocoder_name vocoder_models/universal/libri-tts/fullband-melgan
+#
+# If you upgrade from an old version you may have to delete old models from ~/.local/share/tts
+#
+# For now, for deployment check the systemd unit in the pull request:
+#   https://github.com/NixOS/nixpkgs/pull/103851#issue-521121136
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "tts";
+  version = "0.1.3";
+
+  src = fetchFromGitHub {
+    owner = "coqui-ai";
+    repo = "TTS";
+    rev = "v${version}";
+    sha256 = "0akhiaaqz53bf5zyps3vgjifmgh5wvcc9r4lrq9hmj3dds03vkjq";
+  };
+
+  postPatch = ''
+    sed -i -e 's!librosa==[^"]*!librosa!' requirements.txt
+    sed -i -e 's!numba==[^"]*!numba!' requirements.txt
+    sed -i -e 's!numpy==[^"]*!numpy!' requirements.txt
+    sed -i -e 's!umap-learn==[^"]*!umap-learn!' requirements.txt
+  '';
+
+  nativeBuildInputs = with python3.pkgs; [
+    cython
+  ];
+
+  propagatedBuildInputs = with python3.pkgs; [
+    anyascii
+    coqpit
+    flask
+    gruut
+    gdown
+    inflect
+    jieba
+    librosa
+    matplotlib
+    mecab-python3
+    numba
+    pandas
+    pypinyin
+    pysbd
+    pytorch
+    scipy
+    soundfile
+    tensorboardx
+    tensorflow
+    tqdm
+    umap-learn
+    unidic-lite
+  ];
+
+  postInstall = ''
+    cp -r TTS/server/templates/ $out/${python3.sitePackages}/TTS/server
+    # cython modules are not installed for some reasons
+    (
+      cd TTS/tts/layers/glow_tts/monotonic_align
+      ${python3.interpreter} setup.py install --prefix=$out
+    )
+  '';
+
+  checkInputs = with python3.pkgs; [
+    pytest-sugar
+    pytestCheckHook
+  ];
+
+  disabledTests = [
+    # RuntimeError: fft: ATen not compiled with MKL support
+    "test_torch_stft"
+    "test_stft_loss"
+    "test_multiscale_stft_loss"
+    # Requires network acccess to download models
+    "test_synthesize"
+  ];
+
+  preCheck = ''
+    # use the installed TTS in $PYTHONPATH instead of the one from source to also have cython modules.
+    mv TTS{,.old}
+    export PATH=$out/bin:$PATH
+
+    # numba tries to write to HOME directory
+    export HOME=$TMPDIR
+
+    for file in $(grep -rl 'python TTS/bin' tests); do
+      substituteInPlace "$file" \
+        --replace "python TTS/bin" "${python3.interpreter} $out/lib/${python3.libPrefix}/site-packages/TTS/bin"
+    done
+  '';
+
+  disabledTestPaths = [
+    # requires tensorflow
+    "tests/vocoder_tests/test_vocoder_tf_pqmf.py"
+    "tests/vocoder_tests/test_vocoder_tf_melgan_generator.py"
+    "tests/tts_tests/test_tacotron2_tf_model.py"
+    # RuntimeError: fft: ATen not compiled with MKL support
+    "tests/vocoder_tests/test_fullband_melgan_train.py"
+    "tests/vocoder_tests/test_hifigan_train.py"
+    "tests/vocoder_tests/test_melgan_train.py"
+    "tests/vocoder_tests/test_multiband_melgan_train.py"
+    "tests/vocoder_tests/test_parallel_wavegan_train.py"
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/coqui-ai/TTS";
+    changelog = "https://github.com/coqui-ai/TTS/releases/tag/v${version}";
+    description = "Deep learning toolkit for Text-to-Speech, battle-tested in research and production";
+    license = licenses.mpl20;
+    maintainers = with maintainers; [ hexa mic92 ];
+  };
+}
diff --git a/pkgs/tools/audio/video2midi/default.nix b/pkgs/tools/audio/video2midi/default.nix
index cf9297119e9..e8f5af70c87 100644
--- a/pkgs/tools/audio/video2midi/default.nix
+++ b/pkgs/tools/audio/video2midi/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, pythonPackages, opencv3 }:
+{ lib, fetchFromGitHub, pythonPackages, opencv3 }:
 
 let
   opencv3_ = pythonPackages.toPythonModule (opencv3.override {
@@ -25,11 +25,11 @@ in pythonPackages.buildPythonApplication rec {
     install -Dm755 v2m.py $out/bin/v2m.py
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Youtube synthesia video to midi conversion tool";
     homepage = src.meta.homepage;
     license = licenses.gpl3;
-    maintainers = [ maintainers.gnidorah ];
+    maintainers = [ ];
     platforms = platforms.linux;
   };
 }
diff --git a/pkgs/tools/audio/volctl/default.nix b/pkgs/tools/audio/volctl/default.nix
index dd58671824d..d764644bab1 100644
--- a/pkgs/tools/audio/volctl/default.nix
+++ b/pkgs/tools/audio/volctl/default.nix
@@ -1,46 +1,52 @@
-{ stdenv, fetchFromGitHub, pythonPackages, libpulseaudio, glib, gtk3, gobject-introspection, wrapGAppsHook }:
+{ lib, python3Packages, fetchFromGitHub, wrapGAppsHook, gobject-introspection, libpulseaudio, glib, gtk3, pango, xorg }:
 
-pythonPackages.buildPythonApplication rec {
+python3Packages.buildPythonApplication rec {
   pname = "volctl";
-  version = "0.6.3";
+  version = "0.8.2";
 
   src = fetchFromGitHub {
     owner = "buzz";
     repo = pname;
-    rev = version;
-    sha256 = "0rppqc5wiqxd83z2mgvhi6gdx7yhy9wnav1dbbi1wvm7lzw6fnil";
+    rev = "v${version}";
+    sha256 = "1cx27j83pz2qffnzb85fbl1x6pp3irv1kbw7g1hri7kaw6ky4xiz";
   };
 
+  postPatch = ''
+    substituteInPlace volctl/lib/xwrappers.py \
+      --replace 'libXfixes.so' "${xorg.libXfixes}/lib/libXfixes.so" \
+      --replace 'libXfixes.so.3' "${xorg.libXfixes}/lib/libXfixes.so.3"
+  '';
+
+  preBuild = ''
+    export LD_LIBRARY_PATH=${libpulseaudio}/lib
+  '';
+
   nativeBuildInputs = [
     gobject-introspection
     wrapGAppsHook
   ];
 
-  buildInputs = [
-    glib
-    gtk3
-    libpulseaudio
-  ];
-
-  pythonPath = with pythonPackages; [
+  propagatedBuildInputs = [ pango gtk3 ] ++ (with python3Packages; [
+    click
+    pycairo
     pygobject3
-  ];
+    pyyaml
+  ]);
 
+  # with strictDeps importing "gi.repository.Gtk" fails with "gi.RepositoryError: Typelib file for namespace 'Pango', version '1.0' not found"
   strictDeps = false;
 
-  preBuild = ''
-    export LD_LIBRARY_PATH=${libpulseaudio}/lib
-  '';
+  # no tests included
+  doCheck = false;
+
+  pythonImportsCheck = [ "volctl" ];
 
   preFixup = ''
     glib-compile-schemas ${glib.makeSchemaPath "$out" "${pname}-${version}"}
-
-    gappsWrapperArgs+=(
-      --prefix LD_LIBRARY_PATH : "${libpulseaudio}/lib"
-    )
+    gappsWrapperArgs+=(--prefix LD_LIBRARY_PATH : "${libpulseaudio}/lib")
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "PulseAudio enabled volume control featuring per-app sliders";
     homepage = "https://buzz.github.io/volctl/";
     license = licenses.gpl2;
diff --git a/pkgs/tools/audio/volumeicon/default.nix b/pkgs/tools/audio/volumeicon/default.nix
index 50290881dc7..4d726cbd2a9 100644
--- a/pkgs/tools/audio/volumeicon/default.nix
+++ b/pkgs/tools/audio/volumeicon/default.nix
@@ -1,4 +1,4 @@
-{ pkgs, fetchurl, stdenv, gtk3, pkgconfig, intltool, alsaLib }:
+{ pkgs, fetchurl, lib, stdenv, gtk3, pkg-config, intltool, alsa-lib }:
 
 stdenv.mkDerivation {
   pname = "volumeicon";
@@ -9,10 +9,10 @@ stdenv.mkDerivation {
     sha256 = "182xl2w8syv6ky2h2bc9imc6ap8pzh0p7rp63hh8nw0xm38c3f14";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ gtk3 intltool alsaLib ];
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ gtk3 intltool alsa-lib ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "A lightweight volume control that sits in your systray";
     homepage = "http://softwarebakery.com/maato/volumeicon.html";
     platforms = pkgs.lib.platforms.linux;
diff --git a/pkgs/tools/audio/yabridge/default.nix b/pkgs/tools/audio/yabridge/default.nix
new file mode 100644
index 00000000000..cbe35765cb4
--- /dev/null
+++ b/pkgs/tools/audio/yabridge/default.nix
@@ -0,0 +1,146 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, substituteAll
+, meson
+, ninja
+, pkg-config
+, wine
+, boost
+, libxcb
+}:
+
+let
+  # Derived from subprojects/bitsery.wrap
+  bitsery = rec {
+    version = "5.2.0";
+    src = fetchFromGitHub {
+      owner = "fraillt";
+      repo = "bitsery";
+      rev = "v${version}";
+      hash = "sha256-Bxdtjn2v2lP2lCnvjzmct6QHT7FpwmXoSZtd2oEFS4w=";
+    };
+  };
+
+  # Derived from subprojects/function2.wrap
+  function2 = rec {
+    version = "4.1.0";
+    src = fetchFromGitHub {
+      owner = "Naios";
+      repo = "function2";
+      rev = version;
+      hash = "sha256-JceZU8ZvtYhFheh8BjMvjjZty4hcYxHEK+IIo5X4eSk=";
+    };
+  };
+
+  # Derived from subprojects/tomlplusplus.wrap
+  tomlplusplus = rec {
+    version = "2.1.0";
+    src = fetchFromGitHub {
+      owner = "marzer";
+      repo = "tomlplusplus";
+      rev = "v${version}";
+      hash = "sha256-i6yAEqwkinkPEzzb6ynXytS1SEOUDwi8SixMf62NVzs=";
+    };
+  };
+
+  # Derived from vst3.wrap
+  vst3 = rec {
+    version = "3.7.2_build_28-patched";
+    src = fetchFromGitHub {
+      owner = "robbert-vdh";
+      repo = "vst3sdk";
+      rev = "v${version}";
+      fetchSubmodules = true;
+      sha256 = "sha256-39pvfcg4fvf7DAbAPzEHA1ja1LFL6r88nEwNYwaDC8w=";
+    };
+  };
+in stdenv.mkDerivation rec {
+  pname = "yabridge";
+  version = "3.3.1";
+
+  # NOTE: Also update yabridgectl's cargoHash when this is updated
+  src = fetchFromGitHub {
+    owner = "robbert-vdh";
+    repo = pname;
+    rev = version;
+    hash = "sha256-3B+6YuCWVJljqdyGpePjPf5JDwLSWFNgOCeLt8e4mO8=";
+  };
+
+  # Unpack subproject sources
+  postUnpack = ''(
+    cd "$sourceRoot/subprojects"
+    cp -R --no-preserve=mode,ownership ${bitsery.src} bitsery-${bitsery.version}
+    tar -xf bitsery-patch-${bitsery.version}.tar.xz
+    cp -R --no-preserve=mode,ownership ${function2.src} function2-${function2.version}
+    tar -xf function2-patch-${function2.version}.tar.xz
+    cp -R --no-preserve=mode,ownership ${tomlplusplus.src} tomlplusplus
+    cp -R --no-preserve=mode,ownership ${vst3.src} vst3
+  )'';
+
+  patches = [
+    # Hard code wine path so wine version is correct in logs
+    (substituteAll {
+      src = ./hardcode-wine.patch;
+      inherit wine;
+    })
+  ];
+
+  postPatch = ''
+    patchShebangs .
+  '';
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    wine
+  ];
+
+  buildInputs = [
+    boost
+    libxcb
+  ];
+
+  # Meson is no longer able to pick up Boost automatically.
+  # https://github.com/NixOS/nixpkgs/issues/86131
+  BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
+  BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
+
+  mesonFlags = [
+    "--cross-file" "cross-wine.conf"
+
+    # Requires CMake and is unnecessary
+    "-Dtomlplusplus:GENERATE_CMAKE_CONFIG=disabled"
+
+    # tomlplusplus examples and tests don't build with winegcc
+    "-Dtomlplusplus:BUILD_EXAMPLES=disabled"
+    "-Dtomlplusplus:BUILD_TESTS=disabled"
+  ];
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p "$out/bin" "$out/lib"
+    cp yabridge-group.exe{,.so} "$out/bin"
+    cp yabridge-host.exe{,.so} "$out/bin"
+    cp libyabridge-vst2.so "$out/lib"
+    cp libyabridge-vst3.so "$out/lib"
+    runHook postInstall
+  '';
+
+  # Hard code wine path in wrapper scripts generated by winegcc
+  postFixup = ''
+    for exe in "$out"/bin/*.exe; do
+      substituteInPlace "$exe" \
+        --replace 'WINELOADER="wine"' 'WINELOADER="${wine}/bin/wine"'
+    done
+  '';
+
+  meta = with lib; {
+    description = "Yet Another VST bridge, run Windows VST2 plugins under Linux";
+    homepage = "https://github.com/robbert-vdh/yabridge";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ kira-bruneau ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/pkgs/tools/audio/yabridge/hardcode-wine.patch b/pkgs/tools/audio/yabridge/hardcode-wine.patch
new file mode 100644
index 00000000000..2b6ce1f448f
--- /dev/null
+++ b/pkgs/tools/audio/yabridge/hardcode-wine.patch
@@ -0,0 +1,13 @@
+diff --git a/src/plugin/utils.cpp b/src/plugin/utils.cpp
+index 1ff05bc..0723456 100644
+--- a/src/plugin/utils.cpp
++++ b/src/plugin/utils.cpp
+@@ -351,7 +351,7 @@ std::string get_wine_version() {
+         access(wineloader_path.c_str(), X_OK) == 0) {
+         wine_path = wineloader_path;
+     } else {
+-        wine_path = bp::search_path("wine").string();
++        wine_path = "@wine@/bin/wine";
+     }
+ 
+     bp::ipstream output;
diff --git a/pkgs/tools/audio/yabridgectl/default.nix b/pkgs/tools/audio/yabridgectl/default.nix
new file mode 100644
index 00000000000..bf0913372be
--- /dev/null
+++ b/pkgs/tools/audio/yabridgectl/default.nix
@@ -0,0 +1,39 @@
+{ lib
+, rustPlatform
+, yabridge
+, makeWrapper
+, wine
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "yabridgectl";
+  version = yabridge.version;
+
+  src = yabridge.src;
+  sourceRoot = "source/tools/yabridgectl";
+  cargoHash = "sha256-f5k5OF+bEzH0b6M14Mdp8t4Qd5dP5Qj2fDsdiG1MkYk=";
+
+  patches = [
+    # By default, yabridgectl locates libyabridge.so by using
+    # hard coded distro specific lib paths. This patch replaces those
+    # hard coded paths with lib paths from NIX_PROFILES.
+    ./libyabridge-from-nix-profiles.patch
+  ];
+
+  patchFlags = [ "-p3" ];
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  postFixup = ''
+    wrapProgram "$out/bin/yabridgectl" \
+      --prefix PATH : ${lib.makeBinPath [ wine ]}
+  '';
+
+  meta = with lib; {
+    description = "A small, optional utility to help set up and update yabridge for several directories at once";
+    homepage = "https://github.com/robbert-vdh/yabridge/tree/master/tools/yabridgectl";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ kira-bruneau ];
+    platforms = yabridge.meta.platforms;
+  };
+}
diff --git a/pkgs/tools/audio/yabridgectl/libyabridge-from-nix-profiles.patch b/pkgs/tools/audio/yabridgectl/libyabridge-from-nix-profiles.patch
new file mode 100644
index 00000000000..ec42f98a2e8
--- /dev/null
+++ b/pkgs/tools/audio/yabridgectl/libyabridge-from-nix-profiles.patch
@@ -0,0 +1,70 @@
+diff --git a/tools/yabridgectl/src/config.rs b/tools/yabridgectl/src/config.rs
+index 6e05e34..656eef3 100644
+--- a/tools/yabridgectl/src/config.rs
++++ b/tools/yabridgectl/src/config.rs
+@@ -23,6 +23,7 @@ use std::collections::{BTreeMap, BTreeSet, HashSet};
+ use std::env;
+ use std::fmt::Display;
+ use std::fs;
++use std::iter;
+ use std::path::{Path, PathBuf};
+ use which::which;
+ use xdg::BaseDirectories;
+@@ -222,34 +223,24 @@ impl Config {
+                 }
+             }
+             None => {
+-                // Search in the system library locations and in `~/.local/share/yabridge` if no
+-                // path was set explicitely. We'll also search through `/usr/local/lib` just in case
+-                // but since we advocate against installing yabridge there we won't list this path
+-                // in the error message when `libyabridge-vst2.so` can't be found.
+-                let system_path = Path::new("/usr/lib");
++                // Search through NIX_PROFILES & data home directory if no path was set explicitly.
++                let nix_profiles = env::var("NIX_PROFILES");
+                 let user_path = xdg_dirs.get_data_home();
+-                let lib_directories = [
+-                    system_path,
+-                    // Used on Debian based distros
+-                    Path::new("/usr/lib/x86_64-linux-gnu"),
+-                    // Used on Fedora
+-                    Path::new("/usr/lib64"),
+-                    Path::new("/usr/local/lib"),
+-                    Path::new("/usr/local/lib/x86_64-linux-gnu"),
+-                    Path::new("/usr/local/lib64"),
+-                    &user_path,
+-                ];
++                let lib_directories = nix_profiles.iter()
++                    .flat_map(|profiles| profiles.split(' ')
++                              .map(|profile| Path::new(profile).join("lib")))
++                    .chain(iter::once(user_path.clone()));
++
+                 let mut candidates = lib_directories
+-                    .iter()
+                     .map(|directory| directory.join(LIBYABRIDGE_VST2_NAME));
++
+                 match candidates.find(|directory| directory.exists()) {
+                     Some(candidate) => candidate,
+                     _ => {
+                         return Err(anyhow!(
+-                            "Could not find '{}' in either '{}' or '{}'. You can override the \
+-                            default search path using 'yabridgectl set --path=<path>'.",
++                            "Could not find '{}' through 'NIX_PROFILES' or '{}'. You can override the \
++                             default search path using 'yabridgectl set --path=<path>'.",
+                             LIBYABRIDGE_VST2_NAME,
+-                            system_path.display(),
+                             user_path.display()
+                         ));
+                     }
+diff --git a/tools/yabridgectl/src/main.rs b/tools/yabridgectl/src/main.rs
+index ce701b8..b6b9633 100644
+--- a/tools/yabridgectl/src/main.rs
++++ b/tools/yabridgectl/src/main.rs
+@@ -150,7 +150,7 @@ fn main() -> Result<()> {
+                         .about("Path to the directory containing 'libyabridge-{vst2,vst3}.so'")
+                         .long_about(
+                             "Path to the directory containing 'libyabridge-{vst2,vst3}.so'. If this \
+-                             is not set, then yabridgectl will look in both '/usr/lib' and \
++                             is not set, then yabridgectl will look through 'NIX_PROFILES' and \
+                              '~/.local/share/yabridge' by default.",
+                         )
+                         .validator(validate_path)