feat: add top-level `lib` option

For parity with NixOS:

https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/misc/lib.nix

1 files changed, 15 insertions, 0 deletions

diff --git a/modules/misc/lib.nix b/modules/misc/lib.nix
new file mode 100644
index 0000000..e50794c
--- /dev/null
+++ b/modules/misc/lib.nix
@@ -0,0 +1,15 @@
+{ lib, ... }:
+
+{
+  options = {
+    lib = lib.mkOption {
+      default = { };
+
+      type = lib.types.attrsOf lib.types.attrs;
+
+      description = ''
+        This option allows modules to define helper functions, constants, etc.
+      '';
+    };
+  };
+}