modules/system: flatten

modules/system/unfree.nix

@@ -0,0 +1,19 @@
+{ config, lib, ... }:
+{
+  _file = ./unfree.nix;
+
+  options = {
+    # TODO(maybe?): Allow other types and more customizability
+    settei.unfree.allowedPackages =
+      with lib;
+      mkOption {
+        type = types.listOf types.str;
+      };
+  };
+
+  config = {
+    nixpkgs.config.allowUnfreePredicate = lib.mkForce (
+      pkg: builtins.elem (lib.getName pkg) config.settei.unfree.allowedPackages
+    );
+  };
+}