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Merge branch 'path-info' into ca-drv-exotic

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This commit is contained in:
John Ericson 2022-04-19 22:39:57 +00:00
commit 08b8657978
85 changed files with 1319 additions and 590 deletions
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92
src/libexpr/primops.cc
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@ -989,9 +989,10 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
PathSet context;
bool contentAddressed = false;
bool isImpure = false;
std::optional<std::string> outputHash;
std::string outputHashAlgo;
ContentAddressMethod ingestionMethod = FileIngestionMethod::Flat;
std::optional<ContentAddressMethod> ingestionMethod;
StringSet outputs;
outputs.insert("out");
@ -1052,6 +1053,12 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
settings.requireExperimentalFeature(Xp::CaDerivations);
}
else if (i->name == state.sImpure) {
isImpure = state.forceBool(*i->value, pos);
if (isImpure)
settings.requireExperimentalFeature(Xp::ImpureDerivations);
}
/* The `args' attribute is special: it supplies the
command-line arguments to the builder. */
else if (i->name == state.sArgs) {
@ -1187,12 +1194,12 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
.errPos = posDrvName
});
std::optional<HashType> ht = parseHashTypeOpt(outputHashAlgo);
Hash h = newHashAllowEmpty(*outputHash, ht);
auto h = newHashAllowEmpty(*outputHash, parseHashTypeOpt(outputHashAlgo));
auto method = ingestionMethod.value_or(FileIngestionMethod::Flat);
// FIXME non-trivial fixed refs set
auto ca = contentAddressFromMethodHashAndRefs(
ingestionMethod,
method,
std::move(h),
{});
@ -1202,15 +1209,30 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
drv.outputs.insert_or_assign("out", dof);
}
else if (contentAddressed) {
HashType ht = parseHashType(outputHashAlgo);
else if (contentAddressed || isImpure) {
if (contentAddressed && isImpure)
throw EvalError({
.msg = hintfmt("derivation cannot be both content-addressed and impure"),
.errPos = posDrvName
});
auto ht = parseHashTypeOpt(outputHashAlgo).value_or(htSHA256);
auto method = ingestionMethod.value_or(FileIngestionMethod::Recursive);
for (auto & i : outputs) {
drv.env[i] = hashPlaceholder(i);
drv.outputs.insert_or_assign(i,
DerivationOutput::CAFloating {
.method = ingestionMethod,
.hashType = ht,
});
if (isImpure)
drv.outputs.insert_or_assign(i,
DerivationOutput::Impure {
.method = method,
.hashType = ht,
});
else
drv.outputs.insert_or_assign(i,
DerivationOutput::CAFloating {
.method = method,
.hashType = ht,
});
}
}
@ -1227,34 +1249,26 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
DerivationOutput::Deferred { });
}
// Regular, non-CA derivation should always return a single hash and not
// hash per output.
auto hashModulo = hashDerivationModulo(*state.store, drv, true);
std::visit(overloaded {
[&](const DrvHash & drvHash) {
auto & h = drvHash.hash;
switch (drvHash.kind) {
case DrvHash::Kind::Deferred:
/* Outputs already deferred, nothing to do */
break;
case DrvHash::Kind::Regular:
for (auto & [outputName, output] : drv.outputs) {
auto outPath = state.store->makeOutputPath(outputName, h, drvName);
drv.env[outputName] = state.store->printStorePath(outPath);
output = DerivationOutput::InputAddressed {
.path = std::move(outPath),
};
}
break;
}
},
[&](const CaOutputHashes &) {
// Shouldn't happen as the toplevel derivation is not CA.
assert(false);
},
},
hashModulo.raw());
auto hashModulo = hashDerivationModulo(*state.store, Derivation(drv), true);
switch (hashModulo.kind) {
case DrvHash::Kind::Regular:
for (auto & i : outputs) {
auto h = hashModulo.hashes.at(i);
auto outPath = state.store->makeOutputPath(i, h, drvName);
drv.env[i] = state.store->printStorePath(outPath);
drv.outputs.insert_or_assign(
i,
DerivationOutputInputAddressed {
.path = std::move(outPath),
});
}
break;
;
case DrvHash::Kind::Deferred:
for (auto & i : outputs) {
drv.outputs.insert_or_assign(i, DerivationOutputDeferred {});
}
}
}
/* Write the resulting term into the Nix store directory. */