From 8712e1dafc8127f912ce06836bd1deb7dab6730d Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Thu, 12 Jul 2012 13:46:04 -0400
Subject: [PATCH] Add lib module for modules to provide helper functions

---
 modules/misc/lib.nix    | 15 +++++++++++++++
 modules/module-list.nix |  1 +
 2 files changed, 16 insertions(+)
 create mode 100644 modules/misc/lib.nix

diff --git a/modules/misc/lib.nix b/modules/misc/lib.nix
new file mode 100644
index 000000000000..18fc68a69883
--- /dev/null
+++ b/modules/misc/lib.nix
@@ -0,0 +1,15 @@
+{ config, pkgs, ... }:
+
+{
+  options = {
+    lib = pkgs.lib.mkOption {
+      default = {};
+
+      type = pkgs.lib.types.attrsOf pkgs.lib.types.attrs;
+
+      description = ''
+        This option allows modules to define helper functions, constants, etc.
+      '';
+    };
+  };
+}
diff --git a/modules/module-list.nix b/modules/module-list.nix
index 0a6507cd5e6d..dfc91a765bef 100644
--- a/modules/module-list.nix
+++ b/modules/module-list.nix
@@ -34,6 +34,7 @@
   ./misc/crashdump.nix
   ./misc/ids.nix
   ./misc/locate.nix
+  ./misc/lib.nix
   ./misc/nixpkgs.nix
   ./misc/passthru.nix
   ./misc/version.nix