{ lib, stdenv, fetchurl
, pkg-config, buildPackages
, CoreAudio, alsa-lib, libjack2, ncurses
}:

stdenv.mkDerivation rec {
  pname = "timidity";
  version = "2.15.0";

  src = fetchurl {
    url = "mirror://sourceforge/timidity/TiMidity++-${version}.tar.bz2";
    sha256 = "1xf8n6dqzvi6nr2asags12ijbj1lwk1hgl3s27vm2szib8ww07qn";
  };

  patches = [ ./timidity-iA-Oj.patch ];

  nativeBuildInputs = [ pkg-config ];
  buildInputs = [
    libjack2
    ncurses
  ] ++ lib.optionals stdenv.isLinux [
    alsa-lib
  ] ++ lib.optionals stdenv.isDarwin [
    CoreAudio
  ];

  configureFlags = [
    "--enable-ncurses"
    "lib_cv_va_copy=yes"
    "lib_cv___va_copy=yes"
  ] ++ lib.optionals stdenv.isLinux [
    "--enable-audio=oss,alsa,jack"
    "--enable-alsaseq"
    "--with-default-output=alsa"
    "lib_cv_va_val_copy=yes"
  ] ++ lib.optionals stdenv.isDarwin [
    "--enable-audio=darwin,jack"
    "lib_cv_va_val_copy=no"
  ];

  makeFlags = [
    "AR=${stdenv.cc.targetPrefix}ar"
  ];

  NIX_LDFLAGS = "-ljack -L${libjack2}/lib";

  instruments = fetchurl {
    url = "http://www.csee.umbc.edu/pub/midia/instruments.tar.gz";
    sha256 = "0lsh9l8l5h46z0y8ybsjd4pf6c22n33jsjvapfv3rjlfnasnqw67";
  };

  preBuild = ''
    # calcnewt has to be built with the host compiler.
    ${buildPackages.stdenv.cc}/bin/cc -o timidity/calcnewt -lm timidity/calcnewt.c
    # Remove dependencies of calcnewt so it doesn't try to remake it.
    sed -i 's/^\(calcnewt\$(EXEEXT):\).*/\1/g' timidity/Makefile
  '';

  # the instruments could be compressed (?)
  postInstall = ''
    mkdir -p $out/share/timidity/;
    cp ${./timidity.cfg} $out/share/timidity/timidity.cfg
    tar --strip-components=1 -xf $instruments -C $out/share/timidity/
  '';
  # This fixup step is unnecessary and fails on Darwin
  dontRewriteSymlinks = stdenv.isDarwin;

  meta = with lib; {
    homepage = "https://sourceforge.net/projects/timidity/";
    license = licenses.gpl2;
    description = "A software MIDI renderer";
    maintainers = [ maintainers.marcweber ];
    platforms = platforms.unix;
  };
}