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Make the error message for missing outputs more useful

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Don't only show the name of the output, but also the derivation to which
this output belongs (as otherwise it's very hard to track back what went
wrong)
This commit is contained in:
regnat 2021-01-05 10:01:22 +01:00
parent 00eef55993
commit d3c4284133
1 changed files with 1 additions and 1 deletions
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2
src/libstore/store-api.cc
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@ -394,7 +394,7 @@ OutputPathMap Store::queryDerivationOutputMap(const StorePath & path) {
OutputPathMap result;
for (auto & [outName, optOutPath] : resp) {
if (!optOutPath)
throw Error("output '%s' has no store path mapped to it", outName);
throw Error("output '%s' of derivation '%s' has no store path mapped to it", outName, printStorePath(path));
result.insert_or_assign(outName, *optOutPath);
}
return result;