Merge pull request #48639 from adisbladis/pulseaudio/extra-modules

nixos/pulseaudio: Add extraModules config option

nixos/modules/config/pulseaudio.nix

@@ -154,6 +154,18 @@ in {
         '';
       };
 
+      extraModules = mkOption {
+        type = types.listOf types.package;
+        default = [];
+        example = literalExample "[ pkgs.pulseaudio-modules-bt ]";
+        description = ''
+          Extra pulseaudio modules to use. This is intended for out-of-tree
+          pulseaudio modules like extra bluetooth codecs.
+
+          Extra modules take precedence over built-in pulseaudio modules.
+        '';
+      };
+
       daemon = {
         logLevel = mkOption {
           type = types.str;
@@ -236,6 +248,18 @@ in {
       systemd.packages = [ overriddenPackage ];
     })
 
+    (mkIf (cfg.extraModules != []) {
+      hardware.pulseaudio.daemon.config.dl-search-path = let
+        overriddenModules = builtins.map
+          (drv: drv.override { pulseaudio = overriddenPackage; })
+          cfg.extraModules;
+        modulePaths = builtins.map
+          (drv: "${drv}/lib/pulse-${overriddenPackage.version}/modules")
+          # User-provided extra modules take precedence
+          (overriddenModules ++ [ overriddenPackage ]);
+      in lib.concatStringsSep ":" modulePaths;
+    })
+
     (mkIf hasZeroconf {
       services.avahi.enable = true;
     })

pkgs/applications/audio/pulseaudio-modules-bt/default.nix

@@ -1,7 +1,6 @@
 { stdenv
 , runCommand
 , fetchFromGitHub
-, libpulseaudio
 , pulseaudio
 , pkgconfig
 , ffmpeg_4
@@ -44,7 +43,6 @@ in stdenv.mkDerivation rec {
   ];
 
   buildInputs = [
-    libpulseaudio
     pulseaudio
     ffmpeg_4
     libtool
@@ -67,7 +65,7 @@ in stdenv.mkDerivation rec {
     for so in $out/lib/pulse-${pulseaudio.version}/modules/*.so; do
       orig_rpath=$(patchelf --print-rpath "$so")
       patchelf \
-        --set-rpath "$orig_rpath:${lib.getLib ffmpeg_4}/lib:$out/lib/pulse-${pulseaudio.version}/modules" \
+        --set-rpath "${lib.getLib ffmpeg_4}/lib:$out/lib/pulse-${pulseaudio.version}/modules:$orig_rpath" \
         "$so"
     done
   '';