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Merge pull request #3674 from matthewbauer/allow-empty-hash2

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Allow empty hash in derivations
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Eelco Dolstra 2020-06-12 18:18:12 +02:00 • committed by GitHub
commit 00fa7e2205
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6 changed files with 18 additions and 6 deletions
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5
src/libexpr/primops.cc
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@ -719,7 +719,8 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
throw Error(format("multiple outputs are not supported in fixed-output derivations, at %1%") % posDrvName);
HashType ht = outputHashAlgo.empty() ? htUnknown : parseHashType(outputHashAlgo);
Hash h(*outputHash, ht);
Hash h = newHashAllowEmpty(*outputHash, ht);
auto outPath = state.store->makeFixedOutputPath(ingestionMethod, h, drvName);
if (!jsonObject) drv.env["out"] = state.store->printStorePath(outPath);
@ -1126,7 +1127,7 @@ static void prim_path(EvalState & state, const Pos & pos, Value * * args, Value
} else if (n == "recursive")
method = FileIngestionMethod { state.forceBool(*attr.value, *attr.pos) };
else if (n == "sha256")
expectedHash = Hash(state.forceStringNoCtx(*attr.value, *attr.pos), htSHA256);
expectedHash = newHashAllowEmpty(state.forceStringNoCtx(*attr.value, *attr.pos), htSHA256);
else
throw EvalError(format("unsupported argument '%1%' to 'addPath', at %2%") % attr.name % *attr.pos);
}

2
src/libexpr/primops/fetchTree.cc
View file

@ -103,7 +103,7 @@ static void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
if (n == "url")
url = state.forceStringNoCtx(*attr.value, *attr.pos);
else if (n == "sha256")
expectedHash = Hash(state.forceStringNoCtx(*attr.value, *attr.pos), htSHA256);
expectedHash = newHashAllowEmpty(state.forceStringNoCtx(*attr.value, *attr.pos), htSHA256);
else if (n == "name")
name = state.forceStringNoCtx(*attr.value, *attr.pos);
else