c28de6d96e
For example:
error: `tail' called on an empty list, at
/home/eelco/Dev/nixpkgs/pkgs/applications/misc/hello/ex-2/default.nix:13:7
27 lines
743 B
Nix
27 lines
743 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" ], name, builder, system, ... }:
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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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inherit 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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