initial commit

module.nix

@@ -0,0 +1,15 @@
+{ config, lib, pkgs, ... }:
+
+let cfg = config;
+in
+{
+  config = lib.mkIf cfg.services.asterisk.enable {
+    systemd.services.asterisk.preStart = lib.mkMerge [
+      (lib.mkAfter ''
+        sounds_de="/var/lib/asterisk/sounds/de"
+        [ -L "$sounds_de" ] && rm "$sounds_de"
+        ln -s "${pkgs.asterisk-sounds-de}/" "$sounds_de"
+      '')
+    ];
+  };
+}