krebs lib += getAttrDef

1 files changed, 1 insertions, 0 deletions

diff --git a/krebs/4lib/default.nix b/krebs/4lib/default.nix
index e984614a0..585bd313f 100644
--- a/krebs/4lib/default.nix
+++ b/krebs/4lib/default.nix
@@ -41,6 +41,7 @@ let out = rec {
     mapAttrs (name: _: path + "/${name}")
              (filterAttrs (_: eq "directory") (readDir path));
 
+  getAttrDef = name: set: set.${name} or set.default or null;
   mapAttrValues = f: mapAttrs (_: f);
   setAttr = name: value: set: set // { ${name} = value; };