audio: move framenix to pipewire, keep thinknix at pulseaudio

common/default.nix

@@ -131,26 +131,11 @@ in
     extraBackends = [ pkgs.hplip ];
   };
 
-  # Enable sound.
-  hardware.pulseaudio = {
-    enable = true;
-    # decouple pulseaudio application and sink volumes
-    daemon.config = {
-      flat-volumes = "no";
-    };
-    # C3D2 hq music
-    zeroconf.discovery.enable = true;
-    zeroconf.publish.enable = true;
-  };
-
   # Bluetooth
   hardware.bluetooth = {
     enable = true;
     settings.General.Disable = "Headset"; # disable headset profile
   };
-  hardware.pulseaudio = {
-    package = pkgs.pulseaudioFull;
-  };
 
   # FIXME: at some point, hide GUI and sound (desktop vs. server) behind an option
   # Enable the X11 windowing system.

common/pipewire.nix

@@ -0,0 +1,26 @@
+{ pkgs, ... }:
+{
+  # rtkit is optional but recommended
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+    # If you want to use JACK applications, uncomment this
+    #jack.enable = true;
+  };
+  environment.systemPackages = [ pkgs.easyeffects ];
+
+  # TODO: can be done in a simpler way in 24.05, see wiki.nixos.org
+  environment.etc = {
+    "wireplumber/bluetooth.lua.d/51-bluez-config.lua".text = ''
+      bluez_monitor.properties = {
+        ["bluez5.enable-sbc-xq"] = true,
+        ["bluez5.enable-msbc"] = true,
+        ["bluez5.enable-hw-volume"] = true,
+        ["bluez5.headset-roles"] = "[ hsp_hs hsp_ag hfp_hf hfp_ag ]"
+      }
+    '';
+  };
+}

common/pulseaudio.nix

@@ -0,0 +1,15 @@
+{ pkgs, ... }:
+{
+  # Enable sound.
+  hardware.pulseaudio = {
+    enable = true;
+    package = pkgs.pulseaudioFull;
+    # decouple pulseaudio application and sink volumes
+    daemon.config = {
+      flat-volumes = "no";
+    };
+    # C3D2 hq music
+    zeroconf.discovery.enable = true;
+    zeroconf.publish.enable = true;
+  };
+}

hosts/framenix/default.nix

@@ -11,6 +11,7 @@ in
 {
   imports = [
     ../../common
+    ../../common/pipewire.nix
 
     ./hardware-configuration.nix
     ./storage.nix
@@ -26,7 +27,7 @@ in
   systemd.services.nix-daemon.environment.TMPDIR = "/var/tmp";
 
   # try newer kernels
-  boot.kernelPackages = pkgs.linuxPackages_6_8;   # FIXME: virtualbox not yet compatible with 6.9
+  boot.kernelPackages = pkgs.linuxPackages_6_8; # FIXME: virtualbox not yet compatible with 6.9
 
   boot.kernelParams = [
     # powersave

hosts/thinknix/default.nix

@@ -7,6 +7,7 @@
 {
   imports = [
     ../../common
+    ../../common/pulseaudio.nix
 
     ./hardware-configuration.nix
     ./storage.nix