We add forget files

modules/system/options/apps/dev.nix

@@ -0,0 +1,21 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+with lib;
+let
+  cfg = config.os.shell.dev;
+in
+{
+  options.os.shell.dev = {
+    enable = mkEnableOption "System git service";
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      gcc
+    ];
+  };
+}

modules/system/options/apps/git.nix

@@ -1,4 +1,9 @@
-{ lib, config, ... }:
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
 with lib;
 let
   cfg = config.os.shell.git;

modules/system/os.nix

@@ -34,6 +34,7 @@
   os.virtualisation.podman.enable = true;
 
   # Dev
+  os.shell.dev.enable = true;
   os.shell.devenv.enable = true;
 
   # System version