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Merge pull request #7539 from tweag/fix-nix-why-depends--derivation

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Fix `nix why-depends --derivation`
This commit is contained in:
Eelco Dolstra 2023-01-05 15:32:04 +01:00 committed by GitHub
commit 0fe2b222d5
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 23 additions and 25 deletions
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5
src/libcmd/installables.cc
View file

@ -931,10 +931,7 @@ std::vector<std::pair<std::shared_ptr<Installable>, BuiltPathWithResult>> Instal
DrvOutput outputId { *outputHash, output };
auto realisation = store->queryRealisation(outputId);
if (!realisation)
throw Error(
"cannot operate on an output of the "
"unbuilt derivation '%s'",
outputId.to_string());
throw MissingRealisation(outputId);
outputs.insert_or_assign(output, realisation->outPath);
} else {
// If ca-derivations isn't enabled, assume that

10
src/libstore/realisation.hh
View file

@ -93,4 +93,14 @@ struct RealisedPath {
GENERATE_CMP(RealisedPath, me->raw);
};
class MissingRealisation : public Error
{
public:
MissingRealisation(DrvOutput & outputId)
: Error( "cannot operate on an output of the "
"unbuilt derivation '%s'",
outputId.to_string())
{}
};
}

5
src/libstore/remote-store.cc
View file

@ -879,10 +879,7 @@ std::vector<BuildResult> RemoteStore::buildPathsWithResults(
auto realisation =
queryRealisation(outputId);
if (!realisation)
throw Error(
"cannot operate on an output of unbuilt "
"content-addressed derivation '%s'",
outputId.to_string());
throw MissingRealisation(outputId);
res.builtOutputs.emplace(realisation->id, *realisation);
} else {
// If ca-derivations isn't enabled, assume that

22
src/nix/why-depends.cc
View file

@ -95,23 +95,13 @@ struct CmdWhyDepends : SourceExprCommand
* to build.
*/
auto dependency = parseInstallable(store, _dependency);
auto derivedDependency = dependency->toDerivedPath();
auto optDependencyPath = std::visit(overloaded {
[](const DerivedPath::Opaque & nodrv) -> std::optional<StorePath> {
return { nodrv.path };
},
[&](const DerivedPath::Built & hasdrv) -> std::optional<StorePath> {
if (hasdrv.outputs.size() != 1) {
throw Error("argument '%s' should evaluate to one store path", dependency->what());
auto optDependencyPath = [&]() -> std::optional<StorePath> {
try {
return {Installable::toStorePath(getEvalStore(), store, Realise::Derivation, operateOn, dependency)};
} catch (MissingRealisation &) {
return std::nullopt;
}
auto outputMap = store->queryPartialDerivationOutputMap(hasdrv.drvPath);
auto maybePath = outputMap.find(*hasdrv.outputs.begin());
if (maybePath == outputMap.end()) {
throw Error("unexpected end of iterator");
}
return maybePath->second;
},
}, derivedDependency.raw());
}();
StorePathSet closure;
store->computeFSClosure({packagePath}, closure, false, false);

1
tests/local.mk
View file

@ -92,6 +92,7 @@ nix_tests = \
fmt.sh \
eval-store.sh \
why-depends.sh \
ca/why-depends.sh \
import-derivation.sh \
ca/import-derivation.sh \
nix_path.sh \

3
tests/why-depends.sh
View file

@ -6,6 +6,9 @@ cp ./dependencies.nix ./dependencies.builder0.sh ./config.nix $TEST_HOME
cd $TEST_HOME
nix why-depends --derivation --file ./dependencies.nix input2_drv input1_drv
nix why-depends --file ./dependencies.nix input2_drv input1_drv
nix-build ./dependencies.nix -A input0_drv -o dep
nix-build ./dependencies.nix -o toplevel