reorganization into flat profile-based modules

modules/dev.nix

@@ -5,27 +5,18 @@
   ...
 }:
 
-let
-  cfg = config.dotfiles.dev;
-in
 {
-  options.dotfiles.dev = {
-    enable = lib.mkEnableOption "Development tools and language servers";
-  };
-
-  config = lib.mkIf cfg.enable {
-    environment.systemPackages = with pkgs; [
-      gcc
-      gnumake
-      clang-tools
-      lldb
-      python3
-      uv
-      ruff
-      ty
-      nil
-      nixd
-      nixfmt
-    ];
-  };
+  environment.systemPackages = with pkgs; [
+    gcc
+    gnumake
+    clang-tools
+    lldb
+    python3
+    uv
+    ruff
+    ty
+    nil
+    nixd
+    nixfmt
+  ];
 }