1 files changed, 20 insertions, 0 deletions
diff --git a/modules/nixos-apple-silicon/apple-silicon-support/modules/sound/default.nix b/modules/nixos-apple-silicon/apple-silicon-support/modules/sound/default.nix
new file mode 100644
index 000000000000..5713f1aa18ec
--- /dev/null
+++ b/modules/nixos-apple-silicon/apple-silicon-support/modules/sound/default.nix
@@ -0,0 +1,20 @@
+{ config, pkgs, lib, ... }:
+
+{
+  options.hardware.asahi = {
+    setupAlsaUcm = lib.mkOption {
+      type = lib.types.bool;
+      default = config.sound.enable;
+      description = ''
+	Enable the Asahi-specific ALSA UCM2 configs in the global environment
+        so that headphone jack input and output work properly.
+      '';
+    };
+  };
+
+  config = lib.mkIf config.hardware.asahi.setupAlsaUcm {
+    environment.variables = {
+      ALSA_CONFIG_UCM2 = "${pkgs.alsa-ucm-conf-asahi}/share/alsa/ucm2";
+    };
+  };
+}