diff options
Diffstat (limited to 'lib/attrsets.nix')
-rw-r--r-- | lib/attrsets.nix | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/attrsets.nix b/lib/attrsets.nix index 20be2002402cd..2300ee9c000b4 100644 --- a/lib/attrsets.nix +++ b/lib/attrsets.nix @@ -221,6 +221,16 @@ rec { isDerivation = x: isAttrs x && x ? type && x.type == "derivation"; + /* Convert a store path to a fake derivation. */ + toDerivation = path: + let path' = builtins.storePath path; in + { type = "derivation"; + name = builtins.unsafeDiscardStringContext (builtins.substring 33 (-1) (baseNameOf path')); + outPath = path'; + outputs = [ "out" ]; + }; + + /* If the Boolean `cond' is true, return the attribute set `as', otherwise an empty attribute set. */ optionalAttrs = cond: as: if cond then as else {}; |