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-rw-r--r--pkgs/applications/audio/avldrums-lv2/default.nix2
-rw-r--r--pkgs/applications/audio/cd-discid/default.nix2
-rw-r--r--pkgs/applications/audio/eq10q/default.nix4
-rw-r--r--pkgs/applications/misc/taskjuggler/2.x/default.nix5
-rw-r--r--pkgs/applications/networking/instant-messengers/swift-im/default.nix6
-rw-r--r--pkgs/applications/version-management/git-and-tools/git-remote-hg/default.nix2
-rw-r--r--pkgs/applications/version-management/git-and-tools/git/default.nix2
-rw-r--r--pkgs/development/beam-modules/webdriver/default.nix2
-rw-r--r--pkgs/development/compilers/rgbds/default.nix2
-rw-r--r--pkgs/development/coq-modules/Cheerios/default.nix2
-rw-r--r--pkgs/development/coq-modules/InfSeqExt/default.nix2
-rw-r--r--pkgs/development/coq-modules/StructTact/default.nix2
-rw-r--r--pkgs/development/coq-modules/Verdi/default.nix2
-rw-r--r--pkgs/development/coq-modules/autosubst/default.nix2
-rw-r--r--pkgs/development/coq-modules/bignums/default.nix2
-rw-r--r--pkgs/development/coq-modules/coq-elpi/default.nix2
-rw-r--r--pkgs/development/coq-modules/coq-ext-lib/default.nix2
-rw-r--r--pkgs/development/coq-modules/coqprime/default.nix2
-rw-r--r--pkgs/development/coq-modules/corn/default.nix2
-rw-r--r--pkgs/development/coq-modules/dpdgraph/default.nix8
-rw-r--r--pkgs/development/coq-modules/equations/default.nix2
-rw-r--r--pkgs/development/coq-modules/heq/default.nix2
-rw-r--r--pkgs/development/coq-modules/ltac2/default.nix2
-rw-r--r--pkgs/development/coq-modules/math-classes/default.nix2
-rw-r--r--pkgs/development/coq-modules/mathcomp/extra.nix4
-rw-r--r--pkgs/development/coq-modules/paramcoq/default.nix2
-rw-r--r--pkgs/development/coq-modules/tlc/default.nix2
-rw-r--r--pkgs/development/libraries/farbfeld/default.nix2
-rw-r--r--pkgs/development/libraries/fontconfig/2.10.nix2
-rw-r--r--pkgs/development/libraries/libguestfs/default.nix2
-rw-r--r--pkgs/development/libraries/libosmpbf/default.nix2
-rw-r--r--pkgs/development/libraries/libspotify/default.nix6
-rw-r--r--pkgs/development/libraries/science/biology/htslib/default.nix2
-rw-r--r--pkgs/development/libraries/shhmsg/default.nix2
-rw-r--r--pkgs/development/libraries/shhopt/default.nix2
-rw-r--r--pkgs/development/ocaml-modules/ocplib-simplex/default.nix2
-rw-r--r--pkgs/development/ocaml-modules/pprint/default.nix2
-rw-r--r--pkgs/development/ocaml-modules/psmt2-frontend/default.nix2
-rw-r--r--pkgs/development/ocaml-modules/twt/default.nix2
-rw-r--r--pkgs/development/tools/imatix_gsl/default.nix2
-rw-r--r--pkgs/development/tools/literate-programming/noweb/default.nix2
-rw-r--r--pkgs/development/tools/misc/trv/default.nix2
-rw-r--r--pkgs/games/angband/default.nix2
-rw-r--r--pkgs/misc/drivers/foomatic-filters/default.nix9
-rw-r--r--pkgs/misc/screensavers/slock/default.nix2
-rw-r--r--pkgs/os-specific/linux/alsa-oss/default.nix2
-rw-r--r--pkgs/os-specific/linux/alsa-utils/default.nix2
-rw-r--r--pkgs/os-specific/linux/consoletools/default.nix2
-rw-r--r--pkgs/os-specific/linux/kernel/perf.nix2
-rw-r--r--pkgs/os-specific/linux/libcap/default.nix2
-rw-r--r--pkgs/os-specific/linux/open-isns/default.nix4
-rw-r--r--pkgs/os-specific/linux/paxtest/default.nix2
-rw-r--r--pkgs/os-specific/linux/sysklogd/default.nix2
-rw-r--r--pkgs/servers/amqp/rabbitmq-server/default.nix4
-rw-r--r--pkgs/servers/http/apache-modules/mod_python/default.nix3
-rw-r--r--pkgs/shells/zsh/zsh-syntax-highlighting/default.nix2
-rw-r--r--pkgs/tools/archivers/afio/default.nix2
-rw-r--r--pkgs/tools/compression/pbzip2/default.nix2
-rw-r--r--pkgs/tools/filesystems/nixpart/0.4/lvm2.nix2
-rw-r--r--pkgs/tools/filesystems/sasquatch/default.nix2
-rw-r--r--pkgs/tools/filesystems/squashfs/default.nix2
-rw-r--r--pkgs/tools/misc/automirror/default.nix2
-rw-r--r--pkgs/tools/networking/iodine/default.nix2
-rw-r--r--pkgs/tools/networking/openresolv/default.nix2
-rw-r--r--pkgs/tools/networking/ssmtp/default.nix2
-rw-r--r--pkgs/tools/security/rarcrack/default.nix4
-rw-r--r--pkgs/tools/security/super/default.nix2
-rw-r--r--pkgs/tools/security/tboot/default.nix2
-rw-r--r--pkgs/tools/system/setserial/default.nix2
-rw-r--r--pkgs/tools/text/untex/default.nix4
70 files changed, 86 insertions, 91 deletions
diff --git a/pkgs/applications/audio/avldrums-lv2/default.nix b/pkgs/applications/audio/avldrums-lv2/default.nix
index eeb0f67d193..d71718c32a8 100644
--- a/pkgs/applications/audio/avldrums-lv2/default.nix
+++ b/pkgs/applications/audio/avldrums-lv2/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
     fetchSubmodules = true;
   };
 
-  installFlags = "PREFIX=$(out)";
+  installFlags = [ "PREFIX=$(out)" ];
 
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [
diff --git a/pkgs/applications/audio/cd-discid/default.nix b/pkgs/applications/audio/cd-discid/default.nix
index 76f76c1e750..864e04d88f3 100644
--- a/pkgs/applications/audio/cd-discid/default.nix
+++ b/pkgs/applications/audio/cd-discid/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
     sha256 = "0qrcvn7227qaayjcd5rm7z0k5q89qfy5qkdgwr5pd7ih0va8rmpz";
   };
 
-  installFlags = "PREFIX=$(out) INSTALL=install";
+  installFlags = [ "PREFIX=$(out)" "INSTALL=install" ];
 
   buildInputs = []
     ++ stdenv.lib.optional stdenv.isDarwin IOKit;
diff --git a/pkgs/applications/audio/eq10q/default.nix b/pkgs/applications/audio/eq10q/default.nix
index 0308fad831d..b4ad1505320 100644
--- a/pkgs/applications/audio/eq10q/default.nix
+++ b/pkgs/applications/audio/eq10q/default.nix
@@ -19,9 +19,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  installFlags = ''
-    DESTDIR=$(out)
-  '';
+  installFlags = [ "DESTDIR=$(out)" ];
 
   fixupPhase = ''
     cp -r $out/var/empty/local/lib $out
diff --git a/pkgs/applications/misc/taskjuggler/2.x/default.nix b/pkgs/applications/misc/taskjuggler/2.x/default.nix
index 6b38c3d59c2..a0dc7b7c71e 100644
--- a/pkgs/applications/misc/taskjuggler/2.x/default.nix
+++ b/pkgs/applications/misc/taskjuggler/2.x/default.nix
@@ -56,9 +56,8 @@ stdenv.mkDerivation rec {
     cp Contrib/emacs/taskjug.el $out/share/emacs/site-lisp/
   '';
 
-  installFlags =
-    # kde_locale is not defined when installing without kde.
-    "kde_locale=\${out}/share/locale";
+  # kde_locale is not defined when installing without kde.
+  installFlags = [ "kde_locale=\${out}/share/locale" ];
 
   meta = {
     homepage = http://www.taskjuggler.org;
diff --git a/pkgs/applications/networking/instant-messengers/swift-im/default.nix b/pkgs/applications/networking/instant-messengers/swift-im/default.nix
index db1d0a54dce..d1d69b3d837 100644
--- a/pkgs/applications/networking/instant-messengers/swift-im/default.nix
+++ b/pkgs/applications/networking/instant-messengers/swift-im/default.nix
@@ -31,10 +31,8 @@ stdenv.mkDerivation rec {
     "-fpermissive"
   ];
 
-  preInstall = ''
-    installTargets="$out"
-    installFlags+=" SWIFT_INSTALLDIR=$out"
-  '';
+  installTargets = [ (placeholder "out") ];
+  installFlags = [ "SWIFT_INSTALLDIR=${placeholder "out"}" ];
 
   meta = with stdenv.lib; {
     homepage = https://swift.im/;
diff --git a/pkgs/applications/version-management/git-and-tools/git-remote-hg/default.nix b/pkgs/applications/version-management/git-and-tools/git-remote-hg/default.nix
index 6df3a97dbbb..28e63c4f166 100644
--- a/pkgs/applications/version-management/git-and-tools/git-remote-hg/default.nix
+++ b/pkgs/applications/version-management/git-and-tools/git-remote-hg/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   doCheck = false;
 
-  installFlags = "HOME=\${out} install-doc";
+  installFlags = [ "HOME=\${out}" "install-doc" ];
 
   postInstall = ''
     wrapProgram $out/bin/git-remote-hg \
diff --git a/pkgs/applications/version-management/git-and-tools/git/default.nix b/pkgs/applications/version-management/git-and-tools/git/default.nix
index 312879a49e8..7c46d26bf5b 100644
--- a/pkgs/applications/version-management/git-and-tools/git/default.nix
+++ b/pkgs/applications/version-management/git-and-tools/git/default.nix
@@ -114,7 +114,7 @@ stdenv.mkDerivation {
   # WARNING: Do not `rm` or `mv` files from the source tree; use `cp` instead.
   #          We need many of these files during the installCheckPhase.
 
-  installFlags = "NO_INSTALL_HARDLINKS=1";
+  installFlags = [ "NO_INSTALL_HARDLINKS=1" ];
 
   preInstall = (stdenv.lib.optionalString stdenv.isDarwin ''
     mkdir -p $out/bin
diff --git a/pkgs/development/beam-modules/webdriver/default.nix b/pkgs/development/beam-modules/webdriver/default.nix
index b6695029f34..d772ad7a3c7 100644
--- a/pkgs/development/beam-modules/webdriver/default.nix
+++ b/pkgs/development/beam-modules/webdriver/default.nix
@@ -23,7 +23,7 @@ let
 
     buildInputs = [ erlang ];
 
-    installFlags = "PREFIX=$(out)/lib/erlang/lib";
+    installFlags = [ "PREFIX=$(out)/lib/erlang/lib" ];
 
     meta = {
       description = "WebDriver implementation in Erlang";
diff --git a/pkgs/development/compilers/rgbds/default.nix b/pkgs/development/compilers/rgbds/default.nix
index 99519c53fcd..bf2594b9bf4 100644
--- a/pkgs/development/compilers/rgbds/default.nix
+++ b/pkgs/development/compilers/rgbds/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
     sha256 = "0pzd9ig3ahpgq7jbj82grllxx1v01d620insr2m8h0c6jj25n5hv";
   };
   nativeBuildInputs = [ bison flex pkg-config libpng ];
-  installFlags = "PREFIX=\${out}";
+  installFlags = [ "PREFIX=\${out}" ];
 
   meta = with stdenv.lib; {
     homepage = https://rednex.github.io/rgbds/;
diff --git a/pkgs/development/coq-modules/Cheerios/default.nix b/pkgs/development/coq-modules/Cheerios/default.nix
index 4e75b9407de..14048d1b0d8 100644
--- a/pkgs/development/coq-modules/Cheerios/default.nix
+++ b/pkgs/development/coq-modules/Cheerios/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation {
 
   preConfigure = "patchShebangs ./configure";
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   passthru = {
     compatibleCoqVersions = v: builtins.elem v [ "8.6" "8.7" "8.8" "8.9" ];
diff --git a/pkgs/development/coq-modules/InfSeqExt/default.nix b/pkgs/development/coq-modules/InfSeqExt/default.nix
index 5df96519e7f..ced2b7ce3db 100644
--- a/pkgs/development/coq-modules/InfSeqExt/default.nix
+++ b/pkgs/development/coq-modules/InfSeqExt/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
 
   preConfigure = "patchShebangs ./configure";
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   passthru = {
     compatibleCoqVersions = v: builtins.elem v [ "8.5" "8.6" "8.7" "8.8" "8.9" ];
diff --git a/pkgs/development/coq-modules/StructTact/default.nix b/pkgs/development/coq-modules/StructTact/default.nix
index 2e4d12478b7..798aaabe677 100644
--- a/pkgs/development/coq-modules/StructTact/default.nix
+++ b/pkgs/development/coq-modules/StructTact/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
 
   preConfigure = "patchShebangs ./configure";
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   passthru = {
     compatibleCoqVersions = v: stdenv.lib.versionAtLeast v "8.5";
diff --git a/pkgs/development/coq-modules/Verdi/default.nix b/pkgs/development/coq-modules/Verdi/default.nix
index d2e9660a630..3cf3a4e8d4b 100644
--- a/pkgs/development/coq-modules/Verdi/default.nix
+++ b/pkgs/development/coq-modules/Verdi/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation {
 
   preConfigure = "patchShebangs ./configure";
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   passthru = {
     compatibleCoqVersions = v: builtins.elem v [ "8.6" "8.7" "8.8" "8.9" ];
diff --git a/pkgs/development/coq-modules/autosubst/default.nix b/pkgs/development/coq-modules/autosubst/default.nix
index bffa5172b0e..ee08af40c51 100644
--- a/pkgs/development/coq-modules/autosubst/default.nix
+++ b/pkgs/development/coq-modules/autosubst/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   patches = [./0001-changes-to-work-with-Coq-8.6.patch];
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   meta = with stdenv.lib; {
     homepage = https://www.ps.uni-saarland.de/autosubst/;
diff --git a/pkgs/development/coq-modules/bignums/default.nix b/pkgs/development/coq-modules/bignums/default.nix
index fb45e591ec1..0d6d7f17216 100644
--- a/pkgs/development/coq-modules/bignums/default.nix
+++ b/pkgs/development/coq-modules/bignums/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation {
 
   buildInputs = with coq.ocamlPackages; [ ocaml camlp5 findlib coq ];
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   meta = with stdenv.lib; {
     license = licenses.lgpl2;
diff --git a/pkgs/development/coq-modules/coq-elpi/default.nix b/pkgs/development/coq-modules/coq-elpi/default.nix
index defe52987aa..56aa005c4a9 100644
--- a/pkgs/development/coq-modules/coq-elpi/default.nix
+++ b/pkgs/development/coq-modules/coq-elpi/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ which ];
   buildInputs = [ coq coq.ocaml ] ++ (with coq.ocamlPackages; [ findlib elpi ]);
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   meta = {
     description = "Coq plugin embedding ELPI.";
diff --git a/pkgs/development/coq-modules/coq-ext-lib/default.nix b/pkgs/development/coq-modules/coq-ext-lib/default.nix
index 588172aea61..97703922395 100644
--- a/pkgs/development/coq-modules/coq-ext-lib/default.nix
+++ b/pkgs/development/coq-modules/coq-ext-lib/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   meta = with stdenv.lib; {
     homepage = https://github.com/coq-ext-lib/coq-ext-lib;
diff --git a/pkgs/development/coq-modules/coqprime/default.nix b/pkgs/development/coq-modules/coqprime/default.nix
index 6228bd4be9d..aaf867baf25 100644
--- a/pkgs/development/coq-modules/coqprime/default.nix
+++ b/pkgs/development/coq-modules/coqprime/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ bignums ];
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   meta = with stdenv.lib; {
     description = "Library to certify primality using Pocklington certificate and Elliptic Curve Certificate";
diff --git a/pkgs/development/coq-modules/corn/default.nix b/pkgs/development/coq-modules/corn/default.nix
index e5fa11c5cad..97bb884c92e 100644
--- a/pkgs/development/coq-modules/corn/default.nix
+++ b/pkgs/development/coq-modules/corn/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   meta = {
     homepage = http://c-corn.github.io/;
diff --git a/pkgs/development/coq-modules/dpdgraph/default.nix b/pkgs/development/coq-modules/dpdgraph/default.nix
index 401cb299497..49288d3cb32 100644
--- a/pkgs/development/coq-modules/dpdgraph/default.nix
+++ b/pkgs/development/coq-modules/dpdgraph/default.nix
@@ -41,10 +41,10 @@ stdenv.mkDerivation {
     mkdir -p $out/bin
   '';
 
-  installFlags = ''
-    COQLIB=$(out)/lib/coq/${coq.coq-version}/
-    BINDIR=$(out)/bin
-  '';
+  installFlags = [
+    "COQLIB=$(out)/lib/coq/${coq.coq-version}/"
+    "BINDIR=$(out)/bin"
+  ];
 
   meta = {
     description = "Build dependency graphs between Coq objects";
diff --git a/pkgs/development/coq-modules/equations/default.nix b/pkgs/development/coq-modules/equations/default.nix
index b6efd3d75a4..9ea9ac21671 100644
--- a/pkgs/development/coq-modules/equations/default.nix
+++ b/pkgs/development/coq-modules/equations/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
 
   preBuild = "coq_makefile -f _CoqProject -o Makefile";
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   meta = with stdenv.lib; {
     homepage = https://mattam82.github.io/Coq-Equations/;
diff --git a/pkgs/development/coq-modules/heq/default.nix b/pkgs/development/coq-modules/heq/default.nix
index 03149bab58b..5d3c94c5f5c 100644
--- a/pkgs/development/coq-modules/heq/default.nix
+++ b/pkgs/development/coq-modules/heq/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   preBuild = "cd src";
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}" ];
 
   meta = with stdenv.lib; {
     homepage = https://www.mpi-sws.org/~gil/Heq/;
diff --git a/pkgs/development/coq-modules/ltac2/default.nix b/pkgs/development/coq-modules/ltac2/default.nix
index 67441e9cdd8..92484f169c1 100644
--- a/pkgs/development/coq-modules/ltac2/default.nix
+++ b/pkgs/development/coq-modules/ltac2/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
      coq.ocamlPackages.camlp5
   ;
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   meta = {
     description = "A robust and expressive tactic language for Coq";
diff --git a/pkgs/development/coq-modules/math-classes/default.nix b/pkgs/development/coq-modules/math-classes/default.nix
index 82802b8f30e..7aad4261fd3 100644
--- a/pkgs/development/coq-modules/math-classes/default.nix
+++ b/pkgs/development/coq-modules/math-classes/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ coq bignums ];
   enableParallelBuilding = true;
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   meta = with stdenv.lib; {
     homepage = https://math-classes.github.io;
diff --git a/pkgs/development/coq-modules/mathcomp/extra.nix b/pkgs/development/coq-modules/mathcomp/extra.nix
index c342c25a411..2df9cbe58c7 100644
--- a/pkgs/development/coq-modules/mathcomp/extra.nix
+++ b/pkgs/development/coq-modules/mathcomp/extra.nix
@@ -74,7 +74,7 @@ versions = {
       core-deps = with coqPackages; [ mathcomp-field_1_9 ];
       extra-deps = with coqPackages; [ mathcomp_1_9-bigenough ];
     };
-  }; 
+  };
   "1.8.0" = {
     finmap.version = "1.2.1";
     bigenough.version = "1.0.0";
@@ -154,7 +154,7 @@ packageGen = {
 
     propagatedBuildInputs = [ coq ] ++ mc-core-deps ++ extra-deps;
 
-    installFlags = "-f Makefile.coq COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+    installFlags = [ "-f" "Makefile.coq" "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
     meta = {
       inherit description;
diff --git a/pkgs/development/coq-modules/paramcoq/default.nix b/pkgs/development/coq-modules/paramcoq/default.nix
index a8dd74dd5fb..a57d1bc9088 100644
--- a/pkgs/development/coq-modules/paramcoq/default.nix
+++ b/pkgs/development/coq-modules/paramcoq/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   ++ (with coq.ocamlPackages; [ ocaml findlib camlp5 ])
   ;
 
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+  installFlags = [ "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
 
   passthru = {
     compatibleCoqVersions = v: builtins.hasAttr v params;
diff --git a/pkgs/development/coq-modules/tlc/default.nix b/pkgs/development/coq-modules/tlc/default.nix
index fb966f762bc..119261f412b 100644
--- a/pkgs/development/coq-modules/tlc/default.nix
+++ b/pkgs/development/coq-modules/tlc/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ coq ];
 
-  installFlags = "CONTRIB=$(out)/lib/coq/${coq.coq-version}/user-contrib";
+  installFlags = [ "CONTRIB=$(out)/lib/coq/${coq.coq-version}/user-contrib" ];
 
   meta = {
     homepage = "http://www.chargueraud.org/softs/tlc/";
diff --git a/pkgs/development/libraries/farbfeld/default.nix b/pkgs/development/libraries/farbfeld/default.nix
index a29cbb9bbd1..a528ad6f7f6 100644
--- a/pkgs/development/libraries/farbfeld/default.nix
+++ b/pkgs/development/libraries/farbfeld/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libpng libjpeg ];
   nativeBuildInputs = [ makeWrapper ];
 
-  installFlags = "PREFIX=/ DESTDIR=$(out)";
+  installFlags = [ "PREFIX=/" "DESTDIR=$(out)" ];
   postInstall = ''
     wrapProgram "$out/bin/2ff" --prefix PATH : "${file}/bin"
   '';
diff --git a/pkgs/development/libraries/fontconfig/2.10.nix b/pkgs/development/libraries/fontconfig/2.10.nix
index 1d66735569d..635baff796b 100644
--- a/pkgs/development/libraries/fontconfig/2.10.nix
+++ b/pkgs/development/libraries/fontconfig/2.10.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   # Don't try to write to /var/cache/fontconfig at install time.
-  installFlags = "sysconfdir=$(out)/etc fc_cachedir=$(TMPDIR)/dummy RUN_FC_CACHE_TEST=false";
+  installFlags = [ "sysconfdir=$(out)/etc" "fc_cachedir=$(TMPDIR)/dummy" "RUN_FC_CACHE_TEST=false" ];
 
   passthru = {
     # Empty for backward compatibility, there was no versioning before 2.11
diff --git a/pkgs/development/libraries/libguestfs/default.nix b/pkgs/development/libraries/libguestfs/default.nix
index 07f2099f11a..8d480c2d882 100644
--- a/pkgs/development/libraries/libguestfs/default.nix
+++ b/pkgs/development/libraries/libguestfs/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     ++ stdenv.lib.optionals (!javaSupport) [ "--disable-java" "--without-java" ];
   patches = [ ./libguestfs-syms.patch ];
   NIX_CFLAGS_COMPILE="-I${libxml2.dev}/include/libxml2/";
-  installFlags = "REALLY_INSTALL=yes";
+  installFlags = [ "REALLY_INSTALL=yes" ];
   enableParallelBuilding = true;
 
   postInstall = ''
diff --git a/pkgs/development/libraries/libosmpbf/default.nix b/pkgs/development/libraries/libosmpbf/default.nix
index 4be744e7ba9..416101cad0a 100644
--- a/pkgs/development/libraries/libosmpbf/default.nix
+++ b/pkgs/development/libraries/libosmpbf/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
 
   sourceRoot = "OSM-binary-1.3.3/src";
 
-  installFlags = "PREFIX=$(out)";
+  installFlags = [ "PREFIX=$(out)" ];
 
   meta = {
     homepage = https://github.com/scrosby/OSM-binary;
diff --git a/pkgs/development/libraries/libspotify/default.nix b/pkgs/development/libraries/libspotify/default.nix
index 9ef3d665413..1b0953df4e6 100644
--- a/pkgs/development/libraries/libspotify/default.nix
+++ b/pkgs/development/libraries/libspotify/default.nix
@@ -50,11 +50,11 @@ else stdenv.mkDerivation {
   buildInputs = stdenv.lib.optional (stdenv.hostPlatform.system == "x86_64-darwin") unzip;
 
   # linux-specific
-  installFlags = stdenv.lib.optionalString (isLinux)
+  installFlags = stdenv.lib.optional isLinux
     "prefix=$(out)";
-  patchPhase = stdenv.lib.optionalString (isLinux)
+  patchPhase = stdenv.lib.optionalString isLinux
     "${gnused}/bin/sed -i 's/ldconfig//' Makefile";
-  postInstall = stdenv.lib.optionalString (isLinux)
+  postInstall = stdenv.lib.optionalString isLinux
     "mv -v share $out";
 
   passthru = {
diff --git a/pkgs/development/libraries/science/biology/htslib/default.nix b/pkgs/development/libraries/science/biology/htslib/default.nix
index 0b13696ad5f..7d771414fb0 100644
--- a/pkgs/development/libraries/science/biology/htslib/default.nix
+++ b/pkgs/development/libraries/science/biology/htslib/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--enable-libcurl" ]; # optional but strongly recommended
 
-  installFlags = "prefix=$(out)";
+  installFlags = [ "prefix=$(out)" ];
 
   preCheck = ''
     patchShebangs test/
diff --git a/pkgs/development/libraries/shhmsg/default.nix b/pkgs/development/libraries/shhmsg/default.nix
index 5f14a7bb5ee..596ea1cfaf8 100644
--- a/pkgs/development/libraries/shhmsg/default.nix
+++ b/pkgs/development/libraries/shhmsg/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha256 = "0ax02fzqpaxr7d30l5xbndy1s5vgg1ag643c7zwiw2wj1czrxil8";
   };
 
-  installFlags = "INSTBASEDIR=$(out)";
+  installFlags = [ "INSTBASEDIR=$(out)" ];
 
   meta = with stdenv.lib; {
     description = "A library for displaying messages";
diff --git a/pkgs/development/libraries/shhopt/default.nix b/pkgs/development/libraries/shhopt/default.nix
index dbac4c85961..985ee59348b 100644
--- a/pkgs/development/libraries/shhopt/default.nix
+++ b/pkgs/development/libraries/shhopt/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha256 = "0yd6bl6qw675sxa81nxw6plhpjf9d2ywlm8a5z66zyjf28sl7sds";
   };
 
-  installFlags = "INSTBASEDIR=$(out)";
+  installFlags = [ "INSTBASEDIR=$(out)" ];
 
   meta = with stdenv.lib; {
     description = "A library for parsing command line options";
diff --git a/pkgs/development/ocaml-modules/ocplib-simplex/default.nix b/pkgs/development/ocaml-modules/ocplib-simplex/default.nix
index 1c09edf3a7e..50c63ef718a 100644
--- a/pkgs/development/ocaml-modules/ocplib-simplex/default.nix
+++ b/pkgs/development/ocaml-modules/ocplib-simplex/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ ocaml findlib ];
 
-  installFlags = "LIBDIR=$(OCAMLFIND_DESTDIR)";
+  installFlags = [ "LIBDIR=$(OCAMLFIND_DESTDIR)" ];
 
   createFindlibDestdir = true;
 
diff --git a/pkgs/development/ocaml-modules/pprint/default.nix b/pkgs/development/ocaml-modules/pprint/default.nix
index 899806c4dae..d618f90e541 100644
--- a/pkgs/development/ocaml-modules/pprint/default.nix
+++ b/pkgs/development/ocaml-modules/pprint/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation {
   createFindlibDestdir = true;
 
   dontBuild = true;
-  installFlags = "-C src";
+  installFlags = [ "-C" "src" ];
 
   meta = with stdenv.lib; {
     homepage = http://gallium.inria.fr/~fpottier/pprint/;
diff --git a/pkgs/development/ocaml-modules/psmt2-frontend/default.nix b/pkgs/development/ocaml-modules/psmt2-frontend/default.nix
index 57f1a832f56..485620514e4 100644
--- a/pkgs/development/ocaml-modules/psmt2-frontend/default.nix
+++ b/pkgs/development/ocaml-modules/psmt2-frontend/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   createFindlibDestdir = true;
 
-  installFlags = "LIBDIR=$(OCAMLFIND_DESTDIR)";
+  installFlags = [ "LIBDIR=$(OCAMLFIND_DESTDIR)" ];
 
   meta = {
     description = "A simple parser and type-checker for polomorphic extension of the SMT-LIB 2 language";
diff --git a/pkgs/development/ocaml-modules/twt/default.nix b/pkgs/development/ocaml-modules/twt/default.nix
index 207a7b183e6..940f6cf5107 100644
--- a/pkgs/development/ocaml-modules/twt/default.nix
+++ b/pkgs/development/ocaml-modules/twt/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation {
 
   dontBuild = true;
 
-  installFlags = "PREFIX=$(out)";
+  installFlags = [ "PREFIX=$(out)" ];
 
   dontStrip = true;
 
diff --git a/pkgs/development/tools/imatix_gsl/default.nix b/pkgs/development/tools/imatix_gsl/default.nix
index 549a4d1b826..c4d290bf967 100644
--- a/pkgs/development/tools/imatix_gsl/default.nix
+++ b/pkgs/development/tools/imatix_gsl/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
 
   postPatch = "sed -e 's,/usr/bin/install,install,g' -i src/Makefile";
   preBuild = "cd src";
-  installFlags = "DESTDIR=$(out)";
+  installFlags = [ "DESTDIR=$(out)" ];
 
   meta = with stdenv.lib; {
     license = licenses.gpl3Plus;
diff --git a/pkgs/development/tools/literate-programming/noweb/default.nix b/pkgs/development/tools/literate-programming/noweb/default.nix
index 43cb6e6c2c7..2b798783dfc 100644
--- a/pkgs/development/tools/literate-programming/noweb/default.nix
+++ b/pkgs/development/tools/literate-programming/noweb/default.nix
@@ -57,7 +57,7 @@ let noweb = stdenv.mkDerivation rec {
 
     # HACK: This is ugly, but functional.
     PATH=$out/bin:$PATH make -BC xdoc
-    make $installFlags install-man
+    make "''${installFlags[@]}" install-man
 
     ln -s "$tex" "$out/share/texmf"
   '';
diff --git a/pkgs/development/tools/misc/trv/default.nix b/pkgs/development/tools/misc/trv/default.nix
index 44744413138..2e056306db4 100644
--- a/pkgs/development/tools/misc/trv/default.nix
+++ b/pkgs/development/tools/misc/trv/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   createFindlibDestdir = true;
   dontStrip = true;
 
-  installFlags = "SEMVER=${version} PREFIX=$(out)";
+  installFlags = [ "SEMVER=${version}" "PREFIX=$(out)" ];
 
   meta = with stdenv.lib; {
     homepage = https://github.com/afiniate/trv;
diff --git a/pkgs/games/angband/default.nix b/pkgs/games/angband/default.nix
index 46eb054bc8e..309ea244d71 100644
--- a/pkgs/games/angband/default.nix
+++ b/pkgs/games/angband/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ ncurses5 ];
-  installFlags = "bindir=$(out)/bin";
+  installFlags = [ "bindir=$(out)/bin" ];
 
   meta = with stdenv.lib; {
     homepage = http://rephial.org/;
diff --git a/pkgs/misc/drivers/foomatic-filters/default.nix b/pkgs/misc/drivers/foomatic-filters/default.nix
index d4f15992e74..dbcc17820ec 100644
--- a/pkgs/misc/drivers/foomatic-filters/default.nix
+++ b/pkgs/misc/drivers/foomatic-filters/default.nix
@@ -26,11 +26,10 @@ stdenv.mkDerivation rec {
 
   installTargets = "install-cups";
 
-  installFlags =
-    ''
-      CUPS_FILTERS=$(out)/lib/cups/filter
-      CUPS_BACKENDS=$(out)/lib/cups/backend
-    '';
+  installFlags = [
+    "CUPS_FILTERS=$(out)/lib/cups/filter"
+    "CUPS_BACKENDS=$(out)/lib/cups/backend"
+  ];
 
   meta = {
     description = "Foomatic printing filters";
diff --git a/pkgs/misc/screensavers/slock/default.nix b/pkgs/misc/screensavers/slock/default.nix
index f5e8b60cea0..9dadd085067 100644
--- a/pkgs/misc/screensavers/slock/default.nix
+++ b/pkgs/misc/screensavers/slock/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ xorgproto libX11 libXext libXrandr ];
 
-  installFlags = "DESTDIR=\${out} PREFIX=";
+  installFlags = [ "DESTDIR=\${out}" "PREFIX=" ];
 
   postPatch = "sed -i '/chmod u+s/d' Makefile";
 
diff --git a/pkgs/os-specific/linux/alsa-oss/default.nix b/pkgs/os-specific/linux/alsa-oss/default.nix
index d3e7dd5fa5d..77b351a1998 100644
--- a/pkgs/os-specific/linux/alsa-oss/default.nix
+++ b/pkgs/os-specific/linux/alsa-oss/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--disable-xmlto" ];
 
-  installFlags = "ASOUND_STATE_DIR=$(TMPDIR)/dummy";
+  installFlags = [ "ASOUND_STATE_DIR=$(TMPDIR)/dummy" ];
 
   meta = with stdenv.lib; {
     homepage = http://www.alsa-project.org/;
diff --git a/pkgs/os-specific/linux/alsa-utils/default.nix b/pkgs/os-specific/linux/alsa-utils/default.nix
index 8b1faf788e5..7b356746861 100644
--- a/pkgs/os-specific/linux/alsa-utils/default.nix
+++ b/pkgs/os-specific/linux/alsa-utils/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--disable-xmlto" "--with-udev-rules-dir=$(out)/lib/udev/rules.d" ];
 
-  installFlags = "ASOUND_STATE_DIR=$(TMPDIR)/dummy";
+  installFlags = [ "ASOUND_STATE_DIR=$(TMPDIR)/dummy" ];
 
   meta = with stdenv.lib; {
     homepage = http://www.alsa-project.org/;
diff --git a/pkgs/os-specific/linux/consoletools/default.nix b/pkgs/os-specific/linux/consoletools/default.nix
index 8ea3e3445cc..c46af5fba85 100644
--- a/pkgs/os-specific/linux/consoletools/default.nix
+++ b/pkgs/os-specific/linux/consoletools/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "DESTDIR=$(out)"];
 
-  installFlags = ''PREFIX=""'';
+  installFlags = [ "PREFIX=\"\"" ];
 
   meta = with stdenv.lib; {
     homepage = https://sourceforge.net/projects/linuxconsole/;
diff --git a/pkgs/os-specific/linux/kernel/perf.nix b/pkgs/os-specific/linux/kernel/perf.nix
index 37b728bde88..f343f11f5b6 100644
--- a/pkgs/os-specific/linux/kernel/perf.nix
+++ b/pkgs/os-specific/linux/kernel/perf.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation {
   doInstallCheck = false; # same
 
   separateDebugInfo = true;
-  installFlags = "install install-man ASCIIDOC8=1 prefix=$(out)";
+  installFlags = [ "install" "install-man" "ASCIIDOC8=1" "prefix=$(out)" ];
 
   preFixup = ''
     wrapProgram $out/bin/perf \
diff --git a/pkgs/os-specific/linux/libcap/default.nix b/pkgs/os-specific/linux/libcap/default.nix
index 9c730bb9659..174f1be99db 100644
--- a/pkgs/os-specific/linux/libcap/default.nix
+++ b/pkgs/os-specific/linux/libcap/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
       --replace 'man_prefix=$(prefix)' "man_prefix=$doc"
   '';
 
-  installFlags = "RAISE_SETFCAP=no";
+  installFlags = [ "RAISE_SETFCAP=no" ];
 
   postInstall = ''
     rm "$lib"/lib/*.a
diff --git a/pkgs/os-specific/linux/open-isns/default.nix b/pkgs/os-specific/linux/open-isns/default.nix
index 7b34c1029ba..6a0273afbdd 100644
--- a/pkgs/os-specific/linux/open-isns/default.nix
+++ b/pkgs/os-specific/linux/open-isns/default.nix
@@ -17,8 +17,8 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--enable-shared" ];
 
-  installFlags = "etcdir=$(out)/etc vardir=$(out)/var/lib/isns";
-  installTargets = "install install_hdrs install_lib";
+  installFlags = [ "etcdir=$(out)/etc" "vardir=$(out)/var/lib/isns" ];
+  installTargets = [ "install" "install_hdrs" "install_lib" ];
 
   meta = {
     description = "iSNS server and client for Linux";
diff --git a/pkgs/os-specific/linux/paxtest/default.nix b/pkgs/os-specific/linux/paxtest/default.nix
index e01f84576ce..6bd59e1e7fd 100644
--- a/pkgs/os-specific/linux/paxtest/default.nix
+++ b/pkgs/os-specific/linux/paxtest/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   makefile     = "Makefile.psm";
   makeFlags    = [ "PAXBIN=${paxctl}/bin/paxctl" "BINDIR=$(out)/bin" "RUNDIR=$(out)/lib/paxtest" ];
-  installFlags = ''DESTDIR=""'';
+  installFlags = [ "DESTDIR=\"\"" ];
 
   meta = with stdenv.lib; {
     description = "Test various memory protection measures";
diff --git a/pkgs/os-specific/linux/sysklogd/default.nix b/pkgs/os-specific/linux/sysklogd/default.nix
index 513503ff98e..213394e5ecc 100644
--- a/pkgs/os-specific/linux/sysklogd/default.nix
+++ b/pkgs/os-specific/linux/sysklogd/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
 
   NIX_CFLAGS_COMPILE = "-DSYSV";
 
-  installFlags = "BINDIR=$(out)/sbin MANDIR=$(out)/share/man INSTALL=install";
+  installFlags = [ "BINDIR=$(out)/sbin" "MANDIR=$(out)/share/man" "INSTALL=install" ];
 
   preConfigure =
     ''
diff --git a/pkgs/servers/amqp/rabbitmq-server/default.nix b/pkgs/servers/amqp/rabbitmq-server/default.nix
index a25bf48f8dd..f1838f2a2cb 100644
--- a/pkgs/servers/amqp/rabbitmq-server/default.nix
+++ b/pkgs/servers/amqp/rabbitmq-server/default.nix
@@ -20,8 +20,8 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "man" "doc" ];
 
-  installFlags = "PREFIX=$(out) RMQ_ERLAPP_DIR=$(out)";
-  installTargets = "install install-man";
+  installFlags = [ "PREFIX=$(out)" "RMQ_ERLAPP_DIR=$(out)" ];
+  installTargets = [ "install" "install-man" ];
 
   runtimePath = stdenv.lib.makeBinPath [getconf erlang socat];
   postInstall = ''
diff --git a/pkgs/servers/http/apache-modules/mod_python/default.nix b/pkgs/servers/http/apache-modules/mod_python/default.nix
index f947bf535cc..6aed1481ddf 100644
--- a/pkgs/servers/http/apache-modules/mod_python/default.nix
+++ b/pkgs/servers/http/apache-modules/mod_python/default.nix
@@ -16,8 +16,9 @@ stdenv.mkDerivation rec {
         --replace '-$GIT' ""
   '';
 
+  installFlags = [ "LIBEXECDIR=${placeholder "out"}/modules" ];
+
   preInstall = ''
-    installFlags="LIBEXECDIR=$out/modules $installFlags"
     mkdir -p $out/modules $out/bin
   '';
 
diff --git a/pkgs/shells/zsh/zsh-syntax-highlighting/default.nix b/pkgs/shells/zsh/zsh-syntax-highlighting/default.nix
index 741587ef960..0dbfba52c0f 100644
--- a/pkgs/shells/zsh/zsh-syntax-highlighting/default.nix
+++ b/pkgs/shells/zsh/zsh-syntax-highlighting/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ zsh ];
 
-  installFlags = "PREFIX=$(out)";
+  installFlags = [ "PREFIX=$(out)" ];
 
   meta = with stdenv.lib; {
     description = "Fish shell like syntax highlighting for Zsh";
diff --git a/pkgs/tools/archivers/afio/default.nix b/pkgs/tools/archivers/afio/default.nix
index 13da95a28b5..8d1e28fed29 100644
--- a/pkgs/tools/archivers/afio/default.nix
+++ b/pkgs/tools/archivers/afio/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
    */
   patches = [ ./0001-makefile-fix-installation.patch ];
 
-  installFlags = "DESTDIR=$(out)";
+  installFlags = [ "DESTDIR=$(out)" ];
 
   meta = {
     homepage = http://members.chello.nl/~k.holtman/afio.html;
diff --git a/pkgs/tools/compression/pbzip2/default.nix b/pkgs/tools/compression/pbzip2/default.nix
index 94ca5eb58b1..3314544084f 100644
--- a/pkgs/tools/compression/pbzip2/default.nix
+++ b/pkgs/tools/compression/pbzip2/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   preBuild = "substituteInPlace Makefile --replace g++ c++";
 
-  installFlags = "PREFIX=$(out)";
+  installFlags = [ "PREFIX=$(out)" ];
 
   NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.cc.isClang "-Wno-error=reserved-user-defined-literal";
 
diff --git a/pkgs/tools/filesystems/nixpart/0.4/lvm2.nix b/pkgs/tools/filesystems/nixpart/0.4/lvm2.nix
index 7c92dc95268..804b052b61a 100644
--- a/pkgs/tools/filesystems/nixpart/0.4/lvm2.nix
+++ b/pkgs/tools/filesystems/nixpart/0.4/lvm2.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation {
   #patches = [ ./purity.patch ];
 
   # To prevent make install from failing.
-  preInstall = "installFlags=\"OWNER= GROUP= confdir=$out/etc\"";
+  installFlags = [ "OWNER=" "GROUP=" "confdir=${placeholder "out"}/etc" ];
 
   # Install systemd stuff.
   #installTargets = "install install_systemd_generators install_systemd_units install_tmpfiles_configuration";
diff --git a/pkgs/tools/filesystems/sasquatch/default.nix b/pkgs/tools/filesystems/sasquatch/default.nix
index c393c65a720..36ac3630e54 100644
--- a/pkgs/tools/filesystems/sasquatch/default.nix
+++ b/pkgs/tools/filesystems/sasquatch/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     cd squashfs-tools
   '';
 
-  installFlags = "INSTALL_DIR=\${out}/bin";
+  installFlags = [ "INSTALL_DIR=\${out}/bin" ];
 
   makeFlags = [ "XZ_SUPPORT=1" ]
     ++ stdenv.lib.optional lz4Support "LZ4_SUPPORT=1";
diff --git a/pkgs/tools/filesystems/squashfs/default.nix b/pkgs/tools/filesystems/squashfs/default.nix
index 15a535eed3b..f02a913bc25 100644
--- a/pkgs/tools/filesystems/squashfs/default.nix
+++ b/pkgs/tools/filesystems/squashfs/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation {
 
   preBuild = "cd squashfs-tools";
 
-  installFlags = "INSTALL_DIR=\${out}/bin";
+  installFlags = [ "INSTALL_DIR=\${out}/bin" ];
 
   makeFlags = [ "XZ_SUPPORT=1" "ZSTD_SUPPORT=1" ]
     ++ stdenv.lib.optional lz4Support "LZ4_SUPPORT=1";
diff --git a/pkgs/tools/misc/automirror/default.nix b/pkgs/tools/misc/automirror/default.nix
index 3bfb2d656d9..84778fb1c2d 100644
--- a/pkgs/tools/misc/automirror/default.nix
+++ b/pkgs/tools/misc/automirror/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ git ronn ];
 
-  installFlags = "DESTDIR=$(out)";
+  installFlags = [ "DESTDIR=$(out)" ];
 
   meta = with stdenv.lib; {
     homepage = https://github.com/schlomo/automirror;
diff --git a/pkgs/tools/networking/iodine/default.nix b/pkgs/tools/networking/iodine/default.nix
index 5aa0c01e848..44bf52c9933 100644
--- a/pkgs/tools/networking/iodine/default.nix
+++ b/pkgs/tools/networking/iodine/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   NIX_CFLAGS_COMPILE = "-DIFCONFIGPATH=\"${nettools}/bin/\"";
 
-  installFlags = "prefix=\${out}";
+  installFlags = [ "prefix=\${out}" ];
 
   meta = {
     homepage = http://code.kryo.se/iodine/;
diff --git a/pkgs/tools/networking/openresolv/default.nix b/pkgs/tools/networking/openresolv/default.nix
index 190c903d9c1..423282aa8c1 100644
--- a/pkgs/tools/networking/openresolv/default.nix
+++ b/pkgs/tools/networking/openresolv/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
       EOF
     '';
 
-  installFlags = "SYSCONFDIR=$(out)/etc";
+  installFlags = [ "SYSCONFDIR=$(out)/etc" ];
 
   postInstall = ''
     wrapProgram "$out/sbin/resolvconf" --set PATH "${coreutils}/bin"
diff --git a/pkgs/tools/networking/ssmtp/default.nix b/pkgs/tools/networking/ssmtp/default.nix
index ebe31dc8b5a..4ed0c3393bc 100644
--- a/pkgs/tools/networking/ssmtp/default.nix
+++ b/pkgs/tools/networking/ssmtp/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation {
         --replace '$(INSTALL) -s' '$(INSTALL) -s --strip-program $(STRIP)'
     '';
 
-  installFlags = "etcdir=$(out)/etc";
+  installFlags = [ "etcdir=$(out)/etc" ];
 
   installTargets = [ "install" "install-sendmail" ];
 
diff --git a/pkgs/tools/security/rarcrack/default.nix b/pkgs/tools/security/rarcrack/default.nix
index 65158b3c5fe..68e5df80937 100644
--- a/pkgs/tools/security/rarcrack/default.nix
+++ b/pkgs/tools/security/rarcrack/default.nix
@@ -12,8 +12,8 @@ stdenv.mkDerivation {
   };
 
   buildInputs = [ libxml2 file p7zip unrar unzip ];
-  buildFlags = if stdenv.cc.isClang then [ "CC=clang" ] else null;
-  installFlags = "PREFIX=\${out}";
+  buildFlags = stdenv.lib.optional stdenv.cc.isClang "CC=clang";
+  installFlags = [ "PREFIX=\${out}" ];
 
   patchPhase = ''
    substituteInPlace rarcrack.c --replace "file -i" "${file}/bin/file -i"
diff --git a/pkgs/tools/security/super/default.nix b/pkgs/tools/security/super/default.nix
index 1f00d42f277..716973a3e2e 100644
--- a/pkgs/tools/security/super/default.nix
+++ b/pkgs/tools/security/super/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     "--localstatedir=/var"
   ];
 
-  installFlags = "sysconfdir=$(out)/etc localstatedir=$(TMPDIR)";
+  installFlags = [ "sysconfdir=$(out)/etc" "localstatedir=$(TMPDIR)" ];
 
   meta = {
     homepage = "https://www.ucolick.org/~will/#super";
diff --git a/pkgs/tools/security/tboot/default.nix b/pkgs/tools/security/tboot/default.nix
index f5184b98562..478f77f95f9 100644
--- a/pkgs/tools/security/tboot/default.nix
+++ b/pkgs/tools/security/tboot/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
     substituteInPlace docs/Makefile --replace /usr/share /share
   '';
 
-  installFlags = "DESTDIR=$(out)";
+  installFlags = [ "DESTDIR=$(out)" ];
 
   meta = with stdenv.lib; {
     description = "A pre-kernel/VMM module that uses Intel(R) TXT to perform a measured and verified launch of an OS kernel/VMM";
diff --git a/pkgs/tools/system/setserial/default.nix b/pkgs/tools/system/setserial/default.nix
index 036e3a83cf2..68ea32e1e8a 100644
--- a/pkgs/tools/system/setserial/default.nix
+++ b/pkgs/tools/system/setserial/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ groff ];
 
-  installFlags = ''DESTDIR=$(out)'';
+  installFlags = [ "DESTDIR=$(out)" ];
 
   postConfigure = ''
     sed -e s@/usr/man/@/share/man/@ -i Makefile
diff --git a/pkgs/tools/text/untex/default.nix b/pkgs/tools/text/untex/default.nix
index 923adf8571d..f9c7e3cdfc6 100644
--- a/pkgs/tools/text/untex/default.nix
+++ b/pkgs/tools/text/untex/default.nix
@@ -12,8 +12,8 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "format" ];
 
   unpackPhase = "tar xf $src";
-  installTargets = "install install.man";
-  installFlags = "BINDIR=$(out)/bin MANDIR=$(out)/share/man/man1";
+  installTargets = [ "install" "install.man" ];
+  installFlags = [ "BINDIR=$(out)/bin" "MANDIR=$(out)/share/man/man1" ];
   preBuild = ''
     sed -i '1i#include <stdlib.h>\n#include <string.h>' untex.c
     mkdir -p $out/bin $out/share/man/man1