1 files changed, 41 insertions, 0 deletions
diff --git a/infra/libkookie/nixpkgs/pkgs/top-level/config.nix b/infra/libkookie/nixpkgs/pkgs/top-level/config.nix
new file mode 100644
index 000000000000..7a5b4bdd1798
--- /dev/null
+++ b/infra/libkookie/nixpkgs/pkgs/top-level/config.nix
@@ -0,0 +1,41 @@
+# This file defines the structure of the `config` nixpkgs option.
+
+{ lib, ... }:
+
+with lib;
+
+let
+
+  mkMassRebuild = args: mkOption (builtins.removeAttrs args [ "feature" ] // {
+    type = args.type or (types.uniq types.bool);
+    default = args.default or false;
+    description = (args.description or ''
+      Whether to ${args.feature} while building nixpkgs packages.
+    '') + ''
+      Changing the default may cause a mass rebuild.
+    '';
+  });
+
+  options = {
+
+    /* Internal stuff */
+
+    warnings = mkOption {
+      type = types.listOf types.str;
+      default = [];
+      internal = true;
+    };
+
+    /* Config options */
+
+    doCheckByDefault = mkMassRebuild {
+      feature = "run <literal>checkPhase</literal> by default";
+    };
+
+  };
+
+in {
+
+  inherit options;
+
+}