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Fix error message and avoid recalculation

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This commit is contained in:
John Ericson 2020-08-01 16:22:50 +00:00
parent bc165e28ae
commit c4ada76e86
1 changed files with 2 additions and 2 deletions
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4
src/libfetchers/fetchers.cc
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@ -203,8 +203,8 @@ std::optional<Hash> Input::getNarHash() const
if (auto s = maybeGetStrAttr(attrs, "narHash")) {
auto hash = s->empty() ? Hash(htSHA256) : Hash::parseSRI(*s);
if (hash.type != htSHA256)
throw UsageError("narHash must be specified with SRI notation");
return newHashAllowEmpty(*s, htSHA256);
throw UsageError("narHash must use SHA-256");
return hash;
}
return {};
}