Abstract common multiple output handling into a function

pkgs/applications/audio/flac/default.nix

@@ -1,6 +1,6 @@
-{ stdenv, fetchurl, libogg }:
+{ stdenv, fetchurl, multipleOutputs, libogg }:
 
-stdenv.mkDerivation rec {
+multipleOutputs rec {
   name = "flac-1.2.1";
 
   src = fetchurl {
@@ -22,19 +22,6 @@ stdenv.mkDerivation rec {
 
   outputs = [ "dev" "out" "bin" "doc" ];
 
-  configureFlags = [ "--bindir=$(bin)/bin" "--includedir=$(dev)/include" "--mandir=$(bin)/share/man" ];
-
-  installFlags = [ "pkgconfigdir=$(dev)/lib/pkgconfig m4datadir=$(dev)/share/aclocal" ];
-
-  postInstall =
-    ''
-      if [ -e $out/share/doc ]; then
-        mkdir -p $doc/share/doc
-        mv $out/share/doc/* $doc/share/doc
-        rmdir $out/share/doc
-      fi
-    ''; # */
-
   meta = {
     homepage = http://flac.sourceforge.net;
     description = "Library and tools for encoding and decoding the FLAC lossless audio file format";

pkgs/build-support/multiple-outputs.nix

@@ -0,0 +1,39 @@
+{ stdenv }:
+
+with stdenv.lib;
+
+{ outputs, ... } @ args:
+
+stdenv.mkDerivation (args // {
+
+  configureFlags =
+    optionals (elem "bin" outputs)
+      [ "--bindir=$(bin)/bin" "--mandir=$(bin)/share/man" ]
+    ++ optional (elem "dev" outputs)
+      "--includedir=$(dev)/include";
+
+  installFlags =
+    optionals (elem "dev" outputs)
+      [ "pkgconfigdir=$(dev)/lib/pkgconfig" "m4datadir=$(dev)/share/aclocal" ];
+
+  postInstall =
+    ''
+      if [ -n "$doc" -a -e $out/share/doc ]; then
+        mkdir -p $doc/share/doc
+        mv $out/share/doc/* $doc/share/doc
+        rmdir $out/share/doc
+        rmdir --ignore-fail-on-non-empty $out/share
+      fi
+
+      if [ -n "$dev" ]; then
+        mkdir -p "$dev/nix-support"
+        if [ -n "$propagatedBuildInputs" ]; then
+          echo "$propagatedBuildInputs" > "$dev/nix-support/propagated-build-inputs"
+          propagatedBuildInputs=
+        fi
+        echo "$propagatedBuildNativeInputs $out" > "$dev/nix-support/propagated-build-native-inputs"
+        propagatedBuildNativeInputs=
+      fi
+    ''; # */
+
+})

pkgs/development/libraries/libogg/default.nix

@@ -1,6 +1,6 @@
-{ stdenv, fetchurl, xz }:
+{ stdenv, fetchurl, multipleOutputs, xz }:
 
-stdenv.mkDerivation rec {
+multipleOutputs rec {
   name = "libogg-1.3.0";
 
   src = fetchurl {
@@ -12,19 +12,6 @@ stdenv.mkDerivation rec {
 
   outputs = [ "dev" "doc" "out" ];
 
-  configureFlags = [ "--includedir=$(dev)/include" ];
-
-  installFlags = [ "pkgconfigdir=$(dev)/lib/pkgconfig" ];
-
-  postInstall =
-    ''
-      mkdir -p $doc/share/doc
-      mv $out/share/doc/* $doc/share/doc
-
-      mkdir -p $dev/nix-support
-      echo $out > $dev/nix-support/propagated-build-native-inputs
-    ''; # */
-
   meta = {
     homepage = http://xiph.org/ogg/;
   };

pkgs/development/libraries/libsndfile/default.nix

@@ -1,6 +1,6 @@
-{stdenv, fetchurl, flac, libogg, libvorbis, pkgconfig }:
+{ stdenv, fetchurl, multipleOutputs, flac, libogg, libvorbis, pkgconfig }:
 
-stdenv.mkDerivation rec {
+multipleOutputs rec {
   name = "libsndfile-1.0.23";
 
   src = fetchurl {
@@ -8,25 +8,12 @@ stdenv.mkDerivation rec {
     sha256 = "0k9x4804gfh9d9zd4rm1v2izm8l716rzk4d6jlrjcf45b5sw7jal";
   };
 
-  buildInputs = [pkgconfig flac libogg libvorbis];
+  buildInputs = [ pkgconfig flac libogg libvorbis ];
 
   enableParallelBuilding = true;
 
   outputs = [ "dev" "out" "bin" "doc" ];
 
-  configureFlags = [ "--bindir=$(bin)/bin" "--includedir=$(dev)/include" "--mandir=$(bin)/share/man" ];
-
-  installFlags = [ "pkgconfigdir=$(dev)/lib/pkgconfig m4datadir=$(dev)/share/aclocal" ];
-
-  postInstall =
-    ''
-      if [ -e $out/share/doc ]; then
-        mkdir -p $doc/share/doc
-        mv $out/share/doc/* $doc/share/doc
-        rmdir $out/share/doc
-      fi
-    ''; # */
-
   meta = {
     description = "Libsndfile, a C library for reading and writing files containing sampled sound";
 

pkgs/development/libraries/libvorbis/default.nix

@@ -1,6 +1,6 @@
-{ stdenv, fetchurl, libogg, xz }:
+{ stdenv, fetchurl, multipleOutputs, libogg, xz }:
 
-stdenv.mkDerivation rec {
+multipleOutputs rec {
   name = "libvorbis-1.3.3";
 
   src = fetchurl {
@@ -13,20 +13,6 @@ stdenv.mkDerivation rec {
 
   outputs = [ "dev" "out" "doc" ];
 
-  configureFlags = [ "--includedir=$(dev)/include" ];
-
-  installFlags = [ "pkgconfigdir=$(dev)/lib/pkgconfig" ];
-
-  postInstall =
-    ''
-      mkdir -p $doc/share/doc
-      mv $out/share/doc/* $doc/share/doc
-
-      mkdir -p "$dev/nix-support"
-      echo "$propagatedBuildNativeInputs $out" > "$dev/nix-support/propagated-build-native-inputs"
-      propagatedBuildNativeInputs=
-    ''; # */
-
   meta = {
     homepage = http://xiph.org/vorbis/;
   };

pkgs/top-level/all-packages.nix

@@ -327,6 +327,8 @@ let
     inherit stdenv perl cpio contents ubootChooser;
   };
 
+  multipleOutputs = import ../build-support/multiple-outputs.nix { inherit (pkgs) stdenv; };
+
   makeWrapper = makeSetupHook {} ../build-support/make-wrapper/make-wrapper.sh;
 
   makeModulesClosure = {kernel, rootModules, allowMissing ? false}: