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Fix build

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This commit is contained in:
Matthew Bauer 2020-08-06 19:00:33 -05:00
parent 8abc577cc2
commit 96c158d6e1
1 changed files with 2 additions and 2 deletions
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4
src/libstore/builtins/fetchurl.cc
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@ -63,8 +63,8 @@ void builtinFetchurl(const BasicDerivation & drv, const std::string & netrcData)
for (auto hashedMirror : settings.hashedMirrors.get())
try {
if (!hasSuffix(hashedMirror, "/")) hashedMirror += '/';
auto ht = parseHashType(getAttr("outputHashAlgo"));
auto h = Hash(getAttr("outputHash"), ht);
std::optional<HashType> ht = parseHashTypeOpt(getAttr("outputHashAlgo"));
Hash h = newHashAllowEmpty(getAttr("outputHash"), ht);
fetch(hashedMirror + printHashType(h.type) + "/" + h.to_string(Base16, false));
return;
} catch (Error & e) {