forked from lix-project/lix
b79b85ad76
‘drvAttrs’. This will simplify the implementation of functions such as ‘overrideDerivation’ in Nixpkgs, which need to filter out any added attributes such as outPath.
28 lines
738 B
Nix
28 lines
738 B
Nix
/* This is the implementation of the ‘derivation’ builtin function.
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It's actually a wrapper around the ‘derivationStrict’ primop. */
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drvAttrs @ { outputs ? [ "out" ], ... }:
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let
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strict = derivationStrict drvAttrs;
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commonAttrs = drvAttrs // (builtins.listToAttrs outputsList) //
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{ all = map (x: x.value) outputsList;
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inherit drvAttrs;
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};
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outputToAttrListElement = outputName:
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{ name = outputName;
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value = commonAttrs // {
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outPath = builtins.getAttr outputName strict;
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drvPath = strict.drvPath;
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type = "derivation";
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currentOutput = outputName;
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};
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};
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outputsList = map outputToAttrListElement outputs;
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in (builtins.head outputsList).value
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