pkgs/pipewire-all-bluetooth: A pipewire audio sink that distributes to all Bluetooth speakers

configuration/desktop/audio.nix

@@ -14,6 +14,9 @@
     pulse = {
       enable = true;
     };
+    configPackages = [
+      pkgs.pipewire-all-bluetooth
+    ];
   };
 
   environment.systemPackages = with pkgs; [

pkgs/overlay.nix

@@ -23,6 +23,7 @@ final: prev: {
   nixfiles-generate-config = final.callPackage ./nixfiles/nixfiles-generate-config.nix {};
   nixfiles-generate-backup-secrets = final.callPackage ./nixfiles/nixfiles-generate-backup-secrets.nix {};
   nixfiles-update-ssh-host-keys = final.callPackage ./nixfiles/nixfiles-update-ssh-host-keys.nix {};
+  pipewire-all-bluetooth = final.callPackage ./pipewire-all-bluetooth {};
   print-afra = final.callPackage ./print-afra {};
   run-with-docker-group = final.callPackage ./run-with-docker-group {};
   ssh-gpg = final.callPackage ./ssh-gpg {};

pkgs/pipewire-all-bluetooth/all-bluetooth.conf

@@ -0,0 +1,29 @@
+context.modules = [
+{   name = libpipewire-module-combine-stream
+    args = {
+        combine.mode = sink
+        node.name = "all-bluetooth"
+        node.description = "All Bluetooth devices"
+        combine.latency-compensate = false
+        combine.props = {
+            audio.position = [ FL FR ]
+        }
+        stream.props = {
+        }
+        stream.rules = [
+            {
+                matches = [
+                    {
+                        node.name = "~bluez_output.*"
+                        media.class = "Audio/Sink"
+                    }
+                ]
+                actions = {
+                    create-stream = {
+                    }
+                }
+            }
+        ]
+    }
+}
+]

pkgs/pipewire-all-bluetooth/default.nix

@@ -0,0 +1,9 @@
+{
+runCommand,
+... }:
+
+runCommand "pipewire-all-bluetooth" {} ''
+  mkdir -p $out/share/pipewire/pipewire.conf.d
+
+  cp ${./all-bluetooth.conf} $out/share/pipewire/pipewire.conf.d/all-bluetooth.conf
+''