tvl-depot/third_party/nix/corepkgs/derivation.nix
Vincent Ambo 7994fd1d54 Add 'third_party/nix/' from commit 'be66c7a6b24e3c3c6157fd37b86c7203d14acf10'
git-subtree-dir: third_party/nix
git-subtree-mainline: cf8cd640c1
git-subtree-split: be66c7a6b24e3c3c6157fd37b86c7203d14acf10
2020-05-17 15:52:38 +01:00

27 lines
720 B
Nix
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* This is the implementation of the derivation builtin function.
It's actually a wrapper around the derivationStrict primop. */
drvAttrs @ { outputs ? [ "out" ], ... }:
let
strict = derivationStrict drvAttrs;
commonAttrs = drvAttrs // (builtins.listToAttrs outputsList) //
{ all = map (x: x.value) outputsList;
inherit drvAttrs;
};
outputToAttrListElement = outputName:
{ name = outputName;
value = commonAttrs // {
outPath = builtins.getAttr outputName strict;
drvPath = strict.drvPath;
type = "derivation";
inherit outputName;
};
};
outputsList = map outputToAttrListElement outputs;
in (builtins.head outputsList).value