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Merge pull request #3959 from obsidiansystems/ca-drv-exotic

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Derivations can output "text-hashed" data
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John Ericson 2023-05-10 10:41:59 -04:00 • committed by GitHub
commit 53a1354acf
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24 changed files with 572 additions and 175 deletions
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44
src/libexpr/primops.cc
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@ -1100,7 +1100,7 @@ drvName, Bindings * attrs, Value & v)
bool isImpure = false;
std::optional<std::string> outputHash;
std::string outputHashAlgo;
std::optional<FileIngestionMethod> ingestionMethod;
std::optional<ContentAddressMethod> ingestionMethod;
StringSet outputs;
outputs.insert("out");
@ -1113,7 +1113,10 @@ drvName, Bindings * attrs, Value & v)
auto handleHashMode = [&](const std::string_view s) {
if (s == "recursive") ingestionMethod = FileIngestionMethod::Recursive;
else if (s == "flat") ingestionMethod = FileIngestionMethod::Flat;
else
else if (s == "text") {
experimentalFeatureSettings.require(Xp::DynamicDerivations);
ingestionMethod = TextIngestionMethod {};
} else
state.debugThrowLastTrace(EvalError({
.msg = hintfmt("invalid value '%s' for 'outputHashMode' attribute", s),
.errPos = state.positions[noPos]
@ -1280,11 +1283,16 @@ drvName, Bindings * attrs, Value & v)
}));
/* Check whether the derivation name is valid. */
if (isDerivation(drvName))
if (isDerivation(drvName) &&
!(ingestionMethod == ContentAddressMethod { TextIngestionMethod { } } &&
outputs.size() == 1 &&
*(outputs.begin()) == "out"))
{
state.debugThrowLastTrace(EvalError({
.msg = hintfmt("derivation names are not allowed to end in '%s'", drvExtension),
.msg = hintfmt("derivation names are allowed to end in '%s' only if they produce a single derivation file", drvExtension),
.errPos = state.positions[noPos]
}));
}
if (outputHash) {
/* Handle fixed-output derivations.
@ -1300,21 +1308,15 @@ drvName, Bindings * attrs, Value & v)
auto h = newHashAllowEmpty(*outputHash, parseHashTypeOpt(outputHashAlgo));
auto method = ingestionMethod.value_or(FileIngestionMethod::Flat);
auto outPath = state.store->makeFixedOutputPath(drvName, FixedOutputInfo {
.hash = {
.method = method,
.hash = h,
},
.references = {},
});
drv.env["out"] = state.store->printStorePath(outPath);
drv.outputs.insert_or_assign("out",
DerivationOutput::CAFixed {
.hash = FixedOutputHash {
.method = method,
.hash = std::move(h),
},
});
DerivationOutput::CAFixed dof {
.ca = ContentAddress::fromParts(
std::move(method),
std::move(h)),
};
drv.env["out"] = state.store->printStorePath(dof.path(*state.store, drvName, "out"));
drv.outputs.insert_or_assign("out", std::move(dof));
}
else if (contentAddressed || isImpure) {
@ -1332,13 +1334,13 @@ drvName, Bindings * attrs, Value & v)
if (isImpure)
drv.outputs.insert_or_assign(i,
DerivationOutput::Impure {
.method = method,
.method = method.raw,
.hashType = ht,
});
else
drv.outputs.insert_or_assign(i,
DerivationOutput::CAFloating {
.method = method,
.method = method.raw,
.hashType = ht,
});
}