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Only store hash of fixed derivation output

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we don’t need a full storepath for a fixedoutput derivation. So just
putting the ingestion method + the hash is sufficient.
This commit is contained in:
Matthew Bauer 2020-07-08 19:11:39 -04:00
parent af95a7c16b
commit 8e0d0689be
14 changed files with 162 additions and 121 deletions
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2
perl/lib/Nix/Store.xs
View file

@ -304,7 +304,7 @@ SV * derivationFromPath(char * drvPath)
HV * outputs = newHV();
for (auto & i : drv.outputs)
hv_store(outputs, i.first.c_str(), i.first.size(), newSVpv(store()->printStorePath(i.second.path).c_str(), 0), 0);
hv_store(outputs, i.first.c_str(), i.first.size(), newSVpv(store()->printStorePath(i.second.path(store(), drv.name)).c_str(), 0), 0);
hv_stores(hash, "outputs", newRV((SV *) outputs));
AV * inputDrvs = newAV();

2
src/libexpr/get-drvs.cc
View file

@ -39,7 +39,7 @@ DrvInfo::DrvInfo(EvalState & state, ref<Store> store, const std::string & drvPat
if (i == drv.outputs.end())
throw Error("derivation '%s' does not have output '%s'", store->printStorePath(drvPath), outputName);
outPath = store->printStorePath(i->second.path);
outPath = store->printStorePath(i->second.path(*store, drv.name));
}

27
src/libexpr/primops.cc
View file

@ -64,7 +64,7 @@ void EvalState::realiseContext(const PathSet & context)
DerivationOutputs::iterator i = drv.outputs.find(outputName);
if (i == drv.outputs.end())
throw Error("derivation '%s' does not have an output named '%s'", ctxS, outputName);
allowedPaths->insert(store->printStorePath(i->second.path));
allowedPaths->insert(store->printStorePath(i->second.path(*store, drv.name)));
}
}
}
@ -120,7 +120,7 @@ static void prim_scopedImport(EvalState & state, const Pos & pos, Value * * args
for (const auto & o : drv.outputs) {
v2 = state.allocAttr(w, state.symbols.create(o.first));
mkString(*v2, state.store->printStorePath(o.second.path), {"!" + o.first + "!" + path});
mkString(*v2, state.store->printStorePath(o.second.path(*state.store, drv.name)), {"!" + o.first + "!" + path});
outputsVal->listElems()[outputs_index] = state.allocValue();
mkString(*(outputsVal->listElems()[outputs_index++]), o.first);
}
@ -778,11 +778,12 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
auto outPath = state.store->makeFixedOutputPath(ingestionMethod, h, drvName);
if (!jsonObject) drv.env["out"] = state.store->printStorePath(outPath);
drv.outputs.insert_or_assign("out", DerivationOutput {
.path = std::move(outPath),
.hash = FixedOutputHash {
.method = ingestionMethod,
.hash = std::move(h),
},
.output = DerivationOutputFixed {
.hash = FixedOutputHash {
.method = ingestionMethod,
.hash = std::move(h),
},
},
});
}
@ -797,8 +798,9 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (!jsonObject) drv.env[i] = "";
drv.outputs.insert_or_assign(i,
DerivationOutput {
.path = StorePath::dummy,
.hash = std::optional<FixedOutputHash> {},
.output = DerivationOutputIntensional {
.path = StorePath::dummy,
},
});
}
@ -809,8 +811,9 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (!jsonObject) drv.env[i] = state.store->printStorePath(outPath);
drv.outputs.insert_or_assign(i,
DerivationOutput {
.path = std::move(outPath),
.hash = std::optional<FixedOutputHash>(),
.output = DerivationOutputIntensional {
.path = std::move(outPath),
},
});
}
}
@ -831,7 +834,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
mkString(*state.allocAttr(v, state.sDrvPath), drvPathS, {"=" + drvPathS});
for (auto & i : drv.outputs) {
mkString(*state.allocAttr(v, state.symbols.create(i.first)),
state.store->printStorePath(i.second.path), {"!" + i.first + "!" + drvPathS});
state.store->printStorePath(i.second.path(*state.store, drv.name)), {"!" + i.first + "!" + drvPathS});
}
v.attrs->sort();
}

76
src/libstore/build.cc
View file

@ -1047,7 +1047,7 @@ DerivationGoal::DerivationGoal(const StorePath & drvPath, const BasicDerivation
{
this->drv = std::make_unique<BasicDerivation>(BasicDerivation(drv));
state = &DerivationGoal::haveDerivation;
name = fmt("building of %s", worker.store.showPaths(drv.outputPaths()));
name = fmt("building of %s", worker.store.showPaths(drv.outputPaths(worker.store)));
trace("created");
mcExpectedBuilds = std::make_unique<MaintainCount<uint64_t>>(worker.expectedBuilds);
@ -1182,7 +1182,7 @@ void DerivationGoal::haveDerivation()
retrySubstitution = false;
for (auto & i : drv->outputs)
worker.store.addTempRoot(i.second.path);
worker.store.addTempRoot(i.second.path(worker.store, drv->name));
/* Check what outputs paths are not already valid. */
auto invalidOutputs = checkPathValidity(false, buildMode == bmRepair);
@ -1290,12 +1290,12 @@ void DerivationGoal::repairClosure()
StorePathSet outputClosure;
for (auto & i : drv->outputs) {
if (!wantOutput(i.first, wantedOutputs)) continue;
worker.store.computeFSClosure(i.second.path, outputClosure);
worker.store.computeFSClosure(i.second.path(worker.store, drv->name), outputClosure);
}
/* Filter out our own outputs (which we have already checked). */
for (auto & i : drv->outputs)
outputClosure.erase(i.second.path);
outputClosure.erase(i.second.path(worker.store, drv->name));
/* Get all dependencies of this derivation so that we know which
derivation is responsible for which path in the output
@ -1307,7 +1307,7 @@ void DerivationGoal::repairClosure()
if (i.isDerivation()) {
Derivation drv = worker.store.derivationFromPath(i);
for (auto & j : drv.outputs)
outputsToDrv.insert_or_assign(j.second.path, i);
outputsToDrv.insert_or_assign(j.second.path(worker.store, drv.name), i);
}
/* Check each path (slow!). */
@ -1379,7 +1379,7 @@ void DerivationGoal::inputsRealised()
for (auto & j : i.second) {
auto k = inDrv.outputs.find(j);
if (k != inDrv.outputs.end())
worker.store.computeFSClosure(k->second.path, inputPaths);
worker.store.computeFSClosure(k->second.path(worker.store, inDrv.name), inputPaths);
else
throw Error(
"derivation '%s' requires non-existent output '%s' from input derivation '%s'",
@ -1432,7 +1432,7 @@ void DerivationGoal::tryToBuild()
goal can start a build, and if not, the main loop will sleep a
few seconds and then retry this goal. */
PathSet lockFiles;
for (auto & outPath : drv->outputPaths())
for (auto & outPath : drv->outputPaths(worker.store))
lockFiles.insert(worker.store.Store::toRealPath(outPath));
if (!outputLocks.lockPaths(lockFiles, "", false)) {
@ -1460,16 +1460,16 @@ void DerivationGoal::tryToBuild()
return;
}
missingPaths = drv->outputPaths();
missingPaths = drv->outputPaths(worker.store);
if (buildMode != bmCheck)
for (auto & i : validPaths) missingPaths.erase(i);
/* If any of the outputs already exist but are not valid, delete
them. */
for (auto & i : drv->outputs) {
if (worker.store.isValidPath(i.second.path)) continue;
debug("removing invalid path '%s'", worker.store.printStorePath(i.second.path));
deletePath(worker.store.Store::toRealPath(i.second.path));
if (worker.store.isValidPath(i.second.path(worker.store, drv->name))) continue;
debug("removing invalid path '%s'", worker.store.printStorePath(i.second.path(worker.store, drv->name)));
deletePath(worker.store.Store::toRealPath(i.second.path(worker.store, drv->name)));
}
/* Don't do a remote build if the derivation has the attribute
@ -1692,7 +1692,7 @@ void DerivationGoal::buildDone()
fmt("running post-build-hook '%s'", settings.postBuildHook),
Logger::Fields{worker.store.printStorePath(drvPath)});
PushActivity pact(act.id);
auto outputPaths = drv->outputPaths();
auto outputPaths = drv->outputPaths(worker.store);
std::map<std::string, std::string> hookEnvironment = getEnv();
hookEnvironment.emplace("DRV_PATH", worker.store.printStorePath(drvPath));
@ -1920,7 +1920,7 @@ StorePathSet DerivationGoal::exportReferences(const StorePathSet & storePaths)
if (j.isDerivation()) {
Derivation drv = worker.store.derivationFromPath(j);
for (auto & k : drv.outputs)
worker.store.computeFSClosure(k.second.path, paths);
worker.store.computeFSClosure(k.second.path(worker.store, drv.name), paths);
}
}
@ -2015,7 +2015,7 @@ void DerivationGoal::startBuilder()
/* Substitute output placeholders with the actual output paths. */
for (auto & output : drv->outputs)
inputRewrites[hashPlaceholder(output.first)] = worker.store.printStorePath(output.second.path);
inputRewrites[hashPlaceholder(output.first)] = worker.store.printStorePath(output.second.path(worker.store, drv->name));
/* Construct the environment passed to the builder. */
initEnv();
@ -2200,7 +2200,7 @@ void DerivationGoal::startBuilder()
(typically the dependencies of /bin/sh). Throw them
out. */
for (auto & i : drv->outputs)
dirsInChroot.erase(worker.store.printStorePath(i.second.path));
dirsInChroot.erase(worker.store.printStorePath(i.second.path(drv->name)));
#elif __APPLE__
/* We don't really have any parent prep work to do (yet?)
@ -2613,7 +2613,7 @@ void DerivationGoal::writeStructuredAttrs()
/* Add an "outputs" object containing the output paths. */
nlohmann::json outputs;
for (auto & i : drv->outputs)
outputs[i.first] = rewriteStrings(worker.store.printStorePath(i.second.path), inputRewrites);
outputs[i.first] = rewriteStrings(worker.store.printStorePath(i.second.path(worker.store, drv->name)), inputRewrites);
json["outputs"] = outputs;
/* Handle exportReferencesGraph. */
@ -2818,7 +2818,7 @@ struct RestrictedStore : public LocalFSStore
auto drv = derivationFromPath(path.path);
for (auto & output : drv.outputs)
if (wantOutput(output.first, path.outputs))
newPaths.insert(output.second.path);
newPaths.insert(output.second.path(*this, drv.name));
} else if (!goal.isAllowed(path.path))
throw InvalidPath("cannot build unknown path '%s' in recursive Nix", printStorePath(path.path));
}
@ -3580,7 +3580,7 @@ StorePathSet parseReferenceSpecifiers(Store & store, const BasicDerivation & drv
if (store.isStorePath(i))
result.insert(store.parseStorePath(i));
else if (drv.outputs.count(i))
result.insert(drv.outputs.find(i)->second.path);
result.insert(drv.outputs.find(i)->second.path(store, drv.name));
else throw BuildError("derivation contains an illegal reference specifier '%s'", i);
}
return result;
@ -3618,7 +3618,7 @@ void DerivationGoal::registerOutputs()
if (hook) {
bool allValid = true;
for (auto & i : drv->outputs)
if (!worker.store.isValidPath(i.second.path)) allValid = false;
if (!worker.store.isValidPath(i.second.path(worker.store, drv->name))) allValid = false;
if (allValid) return;
}
@ -3639,23 +3639,23 @@ void DerivationGoal::registerOutputs()
Nix calls. */
StorePathSet referenceablePaths;
for (auto & p : inputPaths) referenceablePaths.insert(p);
for (auto & i : drv->outputs) referenceablePaths.insert(i.second.path);
for (auto & i : drv->outputs) referenceablePaths.insert(i.second.path(worker.store, drv->name));
for (auto & p : addedPaths) referenceablePaths.insert(p);
/* Check whether the output paths were created, and grep each
output path to determine what other paths it references. Also make all
output paths read-only. */
for (auto & i : drv->outputs) {
auto path = worker.store.printStorePath(i.second.path);
if (!missingPaths.count(i.second.path)) continue;
auto path = worker.store.printStorePath(i.second.path(worker.store, drv->name));
if (!missingPaths.count(i.second.path(worker.store, drv->name))) continue;
Path actualPath = path;
if (needsHashRewrite()) {
auto r = redirectedOutputs.find(i.second.path);
auto r = redirectedOutputs.find(i.second.path(worker.store, drv->name));
if (r != redirectedOutputs.end()) {
auto redirected = worker.store.Store::toRealPath(r->second);
if (buildMode == bmRepair
&& redirectedBadOutputs.count(i.second.path)
&& redirectedBadOutputs.count(i.second.path(worker.store, drv->name))
&& pathExists(redirected))
replaceValidPath(path, redirected);
if (buildMode == bmCheck)
@ -3724,7 +3724,9 @@ void DerivationGoal::registerOutputs()
if (fixedOutput) {
if (i.second.hash->method == FileIngestionMethod::Flat) {
FixedOutputHash outputHash = std::get<DerivationOutputFixed>(i.second.output).hash;
if (outputHash.method == FileIngestionMethod::Flat) {
/* The output path should be a regular file without execute permission. */
if (!S_ISREG(st.st_mode) || (st.st_mode & S_IXUSR) != 0)
throw BuildError(
@ -3735,13 +3737,13 @@ void DerivationGoal::registerOutputs()
/* Check the hash. In hash mode, move the path produced by
the derivation to its content-addressed location. */
Hash h2 = i.second.hash->method == FileIngestionMethod::Recursive
? hashPath(*i.second.hash->hash.type, actualPath).first
: hashFile(*i.second.hash->hash.type, actualPath);
Hash h2 = outputHash.method == FileIngestionMethod::Recursive
? hashPath(*outputHash.hash.type, actualPath).first
: hashFile(*outputHash.hash.type, actualPath);
auto dest = worker.store.makeFixedOutputPath(i.second.hash->method, h2, i.second.path.name());
auto dest = worker.store.makeFixedOutputPath(outputHash.method, h2, i.second.path(worker.store, drv->name).name());
if (i.second.hash->hash != h2) {
if (outputHash.hash != h2) {
/* Throw an error after registering the path as
valid. */
@ -3749,7 +3751,7 @@ void DerivationGoal::registerOutputs()
delayedException = std::make_exception_ptr(
BuildError("hash mismatch in fixed-output derivation '%s':\n wanted: %s\n got: %s",
worker.store.printStorePath(dest),
i.second.hash->hash.to_string(SRI, true),
outputHash.hash.to_string(SRI, true),
h2.to_string(SRI, true)));
Path actualDest = worker.store.Store::toRealPath(dest);
@ -3771,7 +3773,7 @@ void DerivationGoal::registerOutputs()
assert(worker.store.parseStorePath(path) == dest);
ca = FixedOutputHash {
.method = i.second.hash->method,
.method = outputHash.method,
.hash = h2,
};
}
@ -3895,7 +3897,7 @@ void DerivationGoal::registerOutputs()
/* If this is the first round of several, then move the output out of the way. */
if (nrRounds > 1 && curRound == 1 && curRound < nrRounds && keepPreviousRound) {
for (auto & i : drv->outputs) {
auto path = worker.store.printStorePath(i.second.path);
auto path = worker.store.printStorePath(i.second.path(worker.store, drv->name));
Path prev = path + checkSuffix;
deletePath(prev);
Path dst = path + checkSuffix;
@ -3913,7 +3915,7 @@ void DerivationGoal::registerOutputs()
if the result was not determistic? */
if (curRound == nrRounds) {
for (auto & i : drv->outputs) {
Path prev = worker.store.printStorePath(i.second.path) + checkSuffix;
Path prev = worker.store.printStorePath(i.second.path(worker.store, drv->name)) + checkSuffix;
deletePath(prev);
}
}
@ -4214,9 +4216,9 @@ StorePathSet DerivationGoal::checkPathValidity(bool returnValid, bool checkHash)
for (auto & i : drv->outputs) {
if (!wantOutput(i.first, wantedOutputs)) continue;
bool good =
worker.store.isValidPath(i.second.path) &&
(!checkHash || worker.pathContentsGood(i.second.path));
if (good == returnValid) result.insert(i.second.path);
worker.store.isValidPath(i.second.path(worker.store, drv->name)) &&
(!checkHash || worker.pathContentsGood(i.second.path(worker.store, drv->name)));
if (good == returnValid) result.insert(i.second.path(worker.store, drv->name));
}
return result;
}

21
src/libstore/builtins/fetchurl.cc
View file

@ -63,16 +63,19 @@ void builtinFetchurl(const BasicDerivation & drv, const std::string & netrcData)
auto & output = drv.outputs.begin()->second;
/* Try the hashed mirrors first. */
if (output.hash && output.hash->method == FileIngestionMethod::Flat)
for (auto hashedMirror : settings.hashedMirrors.get())
try {
if (!hasSuffix(hashedMirror, "/")) hashedMirror += '/';
auto & h = output.hash->hash;
fetch(hashedMirror + printHashType(*h.type) + "/" + h.to_string(Base16, false));
return;
} catch (Error & e) {
debug(e.what());
if (auto hash = std::get_if<DerivationOutputFixed>(&output.output)) {
if (hash->hash.method == FileIngestionMethod::Flat) {
for (auto hashedMirror : settings.hashedMirrors.get()) {
try {
if (!hasSuffix(hashedMirror, "/")) hashedMirror += '/';
fetch(hashedMirror + printHashType(*hash->hash.hash.type) + "/" + hash->hash.hash.to_string(Base16, false));
return;
} catch (Error & e) {
debug(e.what());
}
}
}
}
/* Otherwise try the specified URL. */
fetch(mainUrl);

100
src/libstore/derivations.cc
View file

@ -8,12 +8,28 @@
namespace nix {
const StorePath & BasicDerivation::findOutput(const string & id) const
// FIXME Put this somewhere?
template<class... Ts> struct overloaded : Ts... { using Ts::operator()...; };
template<class... Ts> overloaded(Ts...) -> overloaded<Ts...>;
StorePath DerivationOutput::path(const Store & store, string drvName) const
{
return std::visit(overloaded {
[](DerivationOutputIntensional doi) {
return doi.path;
},
[&](DerivationOutputFixed dof) {
return store.makeFixedOutputPath(dof.hash.method, dof.hash.hash, drvName);
}
}, output);
}
const StorePath & BasicDerivation::findOutput(const Store & store, const string & id) const
{
auto i = outputs.find(id);
if (i == outputs.end())
throw Error("derivation has no output '%s'", id);
return i->second.path;
return i->second.path(store, name);
}
@ -108,7 +124,6 @@ static DerivationOutput parseDerivationOutput(const Store & store, istringstream
expect(str, ","); const auto hash = parseString(str);
expect(str, ")");
std::optional<FixedOutputHash> fsh;
if (hashAlgo != "") {
auto method = FileIngestionMethod::Flat;
if (string(hashAlgo, 0, 2) == "r:") {
@ -116,16 +131,21 @@ static DerivationOutput parseDerivationOutput(const Store & store, istringstream
hashAlgo = string(hashAlgo, 2);
}
const HashType hashType = parseHashType(hashAlgo);
fsh = FixedOutputHash {
.method = std::move(method),
.hash = Hash(hash, hashType),
};
}
return DerivationOutput {
.path = std::move(path),
.hash = std::move(fsh),
};
return DerivationOutput {
.output = DerivationOutputFixed {
.hash = FixedOutputHash {
.method = std::move(method),
.hash = Hash(hash, hashType),
},
}
};
} else
return DerivationOutput {
.output = DerivationOutputIntensional {
.path = std::move(path),
}
};
}
@ -266,10 +286,14 @@ string Derivation::unparse(const Store & store, bool maskOutputs,
for (auto & i : outputs) {
if (first) first = false; else s += ',';
s += '('; printUnquotedString(s, i.first);
s += ','; printUnquotedString(s, maskOutputs ? "" : store.printStorePath(i.second.path));
s += ','; printUnquotedString(s, i.second.hash ? i.second.hash->printMethodAlgo() : "");
s += ','; printUnquotedString(s,
i.second.hash ? i.second.hash->hash.to_string(Base16, false) : "");
s += ','; printUnquotedString(s, maskOutputs ? "" : store.printStorePath(i.second.path(store, name)));
if (auto hash = std::get_if<DerivationOutputFixed>(&i.second.output)) {
s += ','; printUnquotedString(s, hash->hash.printMethodAlgo());
s += ','; printUnquotedString(s, hash->hash.hash.to_string(Base16, false));
} else {
s += ','; printUnquotedString(s, "");
s += ','; printUnquotedString(s, "");
}
s += ')';
}
@ -325,7 +349,7 @@ bool BasicDerivation::isFixedOutput() const
{
return outputs.size() == 1 &&
outputs.begin()->first == "out" &&
outputs.begin()->second.hash;
std::holds_alternative<DerivationOutputFixed>(outputs.begin()->second.output);
}
@ -357,10 +381,11 @@ Hash hashDerivationModulo(Store & store, const Derivation & drv, bool maskOutput
/* Return a fixed hash for fixed-output derivations. */
if (drv.isFixedOutput()) {
DerivationOutputs::const_iterator i = drv.outputs.begin();
auto hash = std::get<DerivationOutputFixed>(i->second.output);
return hashString(htSHA256, "fixed:out:"
+ i->second.hash->printMethodAlgo() + ":"
+ i->second.hash->hash.to_string(Base16, false) + ":"
+ store.printStorePath(i->second.path));
+ hash.hash.printMethodAlgo() + ":"
+ hash.hash.hash.to_string(Base16, false) + ":"
+ store.printStorePath(i->second.path(store, drv.name)));
}
/* For other derivations, replace the inputs paths with recursive
@ -394,11 +419,11 @@ bool wantOutput(const string & output, const std::set<string> & wanted)
}
StorePathSet BasicDerivation::outputPaths() const
StorePathSet BasicDerivation::outputPaths(const Store & store) const
{
StorePathSet paths;
for (auto & i : outputs)
paths.insert(i.second.path);
paths.insert(i.second.path(store, name));
return paths;
}
@ -408,7 +433,6 @@ static DerivationOutput readDerivationOutput(Source & in, const Store & store)
auto hashAlgo = readString(in);
auto hash = readString(in);
std::optional<FixedOutputHash> fsh;
if (hashAlgo != "") {
auto method = FileIngestionMethod::Flat;
if (string(hashAlgo, 0, 2) == "r:") {
@ -416,16 +440,20 @@ static DerivationOutput readDerivationOutput(Source & in, const Store & store)
hashAlgo = string(hashAlgo, 2);
}
auto hashType = parseHashType(hashAlgo);
fsh = FixedOutputHash {
.method = std::move(method),
.hash = Hash(hash, hashType),
return DerivationOutput {
.output = DerivationOutputFixed {
.hash = FixedOutputHash {
.method = std::move(method),
.hash = Hash(hash, hashType),
},
}
};
} else
return DerivationOutput {
.output = DerivationOutputIntensional {
.path = std::move(path),
}
};
}
return DerivationOutput {
.path = std::move(path),
.hash = std::move(fsh),
};
}
StringSet BasicDerivation::outputNames() const
@ -469,10 +497,10 @@ void writeDerivation(Sink & out, const Store & store, const BasicDerivation & dr
out << drv.outputs.size();
for (auto & i : drv.outputs) {
out << i.first
<< store.printStorePath(i.second.path);
if (i.second.hash) {
out << i.second.hash->printMethodAlgo()
<< i.second.hash->hash.to_string(Base16, false);
<< store.printStorePath(i.second.path(store, drv.name));
if (auto hash = std::get_if<DerivationOutputFixed>(&i.second.output)) {
out << hash->hash.printMethodAlgo()
<< hash->hash.hash.to_string(Base16, false);
} else {
out << "" << "";
}

18
src/libstore/derivations.hh
View file

@ -13,10 +13,20 @@ namespace nix {
/* Abstract syntax of derivations. */
struct DerivationOutput
struct DerivationOutputIntensional
{
StorePath path;
std::optional<FixedOutputHash> hash; /* hash used for expected hash computation */
};
struct DerivationOutputFixed
{
FixedOutputHash hash; /* hash used for expected hash computation */
};
struct DerivationOutput
{
std::variant<DerivationOutputIntensional, DerivationOutputFixed> output;
StorePath path(const Store & store, string drvName) const;
};
typedef std::map<string, DerivationOutput> DerivationOutputs;
@ -42,7 +52,7 @@ struct BasicDerivation
/* Return the path corresponding to the output identifier `id' in
the given derivation. */
const StorePath & findOutput(const std::string & id) const;
const StorePath & findOutput(const Store & store, const std::string & id) const;
bool isBuiltin() const;
@ -50,7 +60,7 @@ struct BasicDerivation
bool isFixedOutput() const;
/* Return the output paths of a derivation. */
StorePathSet outputPaths() const;
StorePathSet outputPaths(const Store & store) const;
/* Return the output names of a derivation. */
StringSet outputNames() const;

11
src/libstore/local-store.cc
View file

@ -560,19 +560,12 @@ void LocalStore::checkDerivationOutputs(const StorePath & drvPath, const Derivat
DerivationOutputs::const_iterator out = drv.outputs.find("out");
if (out == drv.outputs.end())
throw Error("derivation '%s' does not have an output named 'out'", printStorePath(drvPath));
check(
makeFixedOutputPath(
out->second.hash->method,
out->second.hash->hash,
drvName),
out->second.path, "out");
}
else {
Hash h = hashDerivationModulo(*this, drv, true);
for (auto & i : drv.outputs)
check(makeOutputPath(i.first, h, drvName), i.second.path, i.first);
check(makeOutputPath(i.first, h, drvName), i.second.path(*this, drv.name), i.first);
}
}
@ -614,7 +607,7 @@ uint64_t LocalStore::addValidPath(State & state,
state.stmtAddDerivationOutput.use()
(id)
(i.first)
(printStorePath(i.second.path))
(printStorePath(i.second.path(*this, drv.name)))
.exec();
}
}

4
src/libstore/misc.cc
View file

@ -198,8 +198,8 @@ void Store::queryMissing(const std::vector<StorePathWithOutputs> & targets,
PathSet invalid;
for (auto & j : drv->outputs)
if (wantOutput(j.first, path.outputs)
&& !isValidPath(j.second.path))
invalid.insert(printStorePath(j.second.path));
&& !isValidPath(j.second.path(*this, drv->name)))
invalid.insert(printStorePath(j.second.path(*this, drv->name)));
if (invalid.empty()) return;
if (settings.useSubstitutes && parsedDrv.substitutesAllowed()) {

2
src/nix-env/nix-env.cc
View file

@ -381,7 +381,7 @@ static void queryInstSources(EvalState & state,
if (path.isDerivation()) {
elem.setDrvPath(state.store->printStorePath(path));
elem.setOutPath(state.store->printStorePath(state.store->derivationFromPath(path).findOutput("out")));
elem.setOutPath(state.store->printStorePath(state.store->derivationFromPath(path).findOutput(*state.store, "out")));
if (name.size() >= drvExtension.size() &&
string(name, name.size() - drvExtension.size()) == drvExtension)
name = string(name, 0, name.size() - drvExtension.size());

6
src/nix-store/nix-store.cc
View file

@ -77,7 +77,7 @@ static PathSet realisePath(StorePathWithOutputs path, bool build = true)
if (i == drv.outputs.end())
throw Error("derivation '%s' does not have an output named '%s'",
store2->printStorePath(path.path), j);
auto outPath = store2->printStorePath(i->second.path);
auto outPath = store2->printStorePath(i->second.path(*store, drv.name));
if (store2) {
if (gcRoot == "")
printGCWarning();
@ -219,7 +219,7 @@ static StorePathSet maybeUseOutputs(const StorePath & storePath, bool useOutput,
auto drv = store->derivationFromPath(storePath);
StorePathSet outputs;
for (auto & i : drv.outputs)
outputs.insert(i.second.path);
outputs.insert(i.second.path(*store, drv.name));
return outputs;
}
else return {storePath};
@ -313,7 +313,7 @@ static void opQuery(Strings opFlags, Strings opArgs)
if (forceRealise) realisePath({i2});
Derivation drv = store->derivationFromPath(i2);
for (auto & j : drv.outputs)
cout << fmt("%1%\n", store->printStorePath(j.second.path));
cout << fmt("%1%\n", store->printStorePath(j.second.path(*store, drv.name)));
}
break;
}

4
src/nix/develop.cc
View file

@ -135,7 +135,9 @@ StorePath getDerivationEnvironment(ref<Store> store, const StorePath & drvPath)
drv.inputSrcs.insert(std::move(getEnvShPath));
Hash h = hashDerivationModulo(*store, drv, true);
auto shellOutPath = store->makeOutputPath("out", h, drvName);
drv.outputs.insert_or_assign("out", DerivationOutput { .path = shellOutPath });
drv.outputs.insert_or_assign("out", DerivationOutput { .output = DerivationOutputIntensional {
.path = shellOutPath
} });
drv.env["out"] = store->printStorePath(shellOutPath);
auto shellDrvPath2 = writeDerivation(store, drv, drvName);

2
src/nix/repl.cc
View file

@ -486,7 +486,7 @@ bool NixRepl::processLine(string line)
auto drv = readDerivation(*state->store, drvPath, std::string(state->store->parseStorePath(drvPath).name()));
std::cout << std::endl << "this derivation produced the following outputs:" << std::endl;
for (auto & i : drv.outputs)
std::cout << fmt(" %s -> %s\n", i.first, state->store->printStorePath(i.second.path));
std::cout << fmt(" %s -> %s\n", i.first, state->store->printStorePath(i.second.path(*state->store, drv.name)));
}
} else if (command == ":i") {
runProgram(settings.nixBinDir + "/nix-env", Strings{"-i", drvPath});

8
src/nix/show-derivation.cc
View file

@ -69,10 +69,10 @@ struct CmdShowDerivation : InstallablesCommand
auto outputsObj(drvObj.object("outputs"));
for (auto & output : drv.outputs) {
auto outputObj(outputsObj.object(output.first));
outputObj.attr("path", store->printStorePath(output.second.path));
if (output.second.hash) {
outputObj.attr("hashAlgo", output.second.hash->printMethodAlgo());
outputObj.attr("hash", output.second.hash->hash.to_string(Base16, false));
outputObj.attr("path", store->printStorePath(output.second.path(*store, drv.name)));
if (auto hash = std::get_if<DerivationOutputFixed>(&output.second.output)) {
outputObj.attr("hashAlgo", hash->hash.printMethodAlgo());
outputObj.attr("hash", hash->hash.hash.to_string(Base16, false));
}
}
}