refactor(registry): add stable uid registry

modules/services/actualbudget.nix

@@ -1,7 +1,6 @@
 {
   config,
   lib,
-  my,
   ...
 }:
 let
@@ -29,12 +28,6 @@ in
       description = "User account that runs Actual Budget.";
     };
 
-    uid = lib.mkOption {
-      type = lib.types.ints.positive;
-      default = my.serviceUid "actualbudget";
-      description = "Stable uid for the Actual Budget service user.";
-    };
-
     group = lib.mkOption {
       type = lib.types.str;
       default = "storage";
@@ -43,21 +36,27 @@ in
 
   };
 
-  config = lib.mkIf cfg.enable {
-    users.users.${cfg.user} = {
-      isSystemUser = true;
-      uid = cfg.uid;
-      group = cfg.group;
-    };
+  config = lib.mkMerge [
+    {
+      registry."stable-uid".${config.networking.hostName}.actualbudget = 20001;
+    }
 
-    services.actual = {
-      enable = true;
-      openFirewall = true;
-      user = cfg.user;
-      group = cfg.group;
-      settings = {
-        inherit (cfg) port dataDir;
+    (lib.mkIf cfg.enable {
+      users.users.${cfg.user} = {
+        isSystemUser = true;
+        uid = config.registry."stable-uid".${config.networking.hostName}.actualbudget;
+        group = cfg.group;
       };
-    };
-  };
+
+      services.actual = {
+        enable = true;
+        openFirewall = true;
+        user = cfg.user;
+        group = cfg.group;
+        settings = {
+          inherit (cfg) port dataDir;
+        };
+      };
+    })
+  ];
 }