lib: copy module from NixOS

Importing the module directly from NixOS causes the documentation to
break, in particular the "Declared by" section.

Fixes #405

1 files changed, 14 insertions, 0 deletions

diff --git a/modules/misc/lib.nix b/modules/misc/lib.nix
new file mode 100644
index 00000000000..a0907545314
--- /dev/null
+++ b/modules/misc/lib.nix
@@ -0,0 +1,14 @@
+{ lib, ... }:
+
+{
+  options = {
+    lib = lib.mkOption {
+      type = lib.types.attrsOf lib.types.attrs;
+      default = {};
+      description = ''
+        This option allows modules to define helper functions,
+        constants, etc.
+      '';
+    };
+  };
+}