things

flake.nix

@@ -75,6 +75,9 @@
           nativeBuildInputs =
             [
               pkgs.pkg-config
+              # libspa-0.2.pc: pipewire-native bakes the SPA plugin directory
+              # from it, and loads libspa-support from there at runtime.
+              pkgs.pipewire.dev
             ]
             ++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [
               pkgs.mold
@@ -115,7 +118,9 @@
           nativeBuildInputs = [ pkgs.makeWrapper ];
           postBuild = ''
             wrapProgram $out/bin/core \
-              --prefix LD_LIBRARY_PATH : ${pkgs.lib.makeLibraryPath guiLibs}
+              --prefix LD_LIBRARY_PATH : ${pkgs.lib.makeLibraryPath guiLibs} \
+              --set SPA_PLUGIN_DIR ${pkgs.pipewire}/lib/spa-0.2 \
+              --set PIPEWIRE_CONFIG_DIR ${pkgs.pipewire}/share/pipewire
           '';
           meta.mainProgram = "core";
         };
@@ -144,10 +149,13 @@
           # every dependency on each switch.
           shellHook = ''
             export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:${pkgs.lib.makeLibraryPath guiLibs}"
+            # pipewire-native dlopens SPA plugins and reads client.conf.
+            export SPA_PLUGIN_DIR="${pkgs.pipewire}/lib/spa-0.2"
+            export PIPEWIRE_CONFIG_DIR="${pkgs.pipewire}/share/pipewire"
           '';
 
           # Extra inputs can be added here; cargo and rustc are provided by default.
-          packages = guiLibs ++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [ pkgs.mold ];
+          packages = guiLibs ++ [ pkgs.pipewire.dev ] ++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [ pkgs.mold ];
         };
       }
     ))