[Overlays] Add global overlays configuration

default.nix

@@ -12,7 +12,7 @@
     ./hardening.nix
     ./hardware.nix
     ./laptop.nix
-    # ./overlays.nix
+    ./overlays.nix
     ./non-persistence.nix
   ];
 }

overlays.nix

@@ -0,0 +1,30 @@
+{config, pkgs, options, lib, ...}:
+with lib;
+let
+  cfg = config.aviallon.overlays;
+in
+{
+  options.aviallon.overlays = {
+    enable = mkOption {
+      default = true;
+      type = types.bool;
+    };
+  };
+  config = mkIf cfg.enable {
+     nix.nixPath =
+      # Prepend default nixPath values.
+      options.nix.nixPath.default ++
+      # Append our nixpkgs-overlays.
+      [ "nixpkgs-overlays=/etc/nixos/overlays-compat/" ]
+    ;
+
+
+    nixpkgs.overlays = [
+    #  (self: super: {
+    #    nur = import (builtins.fetchTarball "https://github.com/nix-community/NUR/archive/master.tar.gz") {
+    #      inherit pkgs;
+    #    };
+    #  })
+    ];
+  }; 
+}