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lix/corepkgs/imported-drv-to-derivation.nix

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attrs @ { drvPath, outputs, ... }:
let
commonAttrs = (builtins.listToAttrs outputsList) //
{ all = map (x: x.value) outputsList;
inherit drvPath;
type = "derivation";
};
outputToAttrListElement = outputName:
{ name = outputName;
value = commonAttrs // {
outPath = builtins.getAttr outputName attrs;
inherit outputName;
};
};
outputsList = map outputToAttrListElement outputs;
in (builtins.head outputsList).value