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Fixing #7479

Browse source 
Types converted:

- `NixStringContextElem`
- `OutputsSpec`
- `ExtendedOutputsSpec`
- `DerivationOutput`
- `DerivationType`

Existing ones mostly conforming the pattern cleaned up:

- `ContentAddressMethod`
- `ContentAddressWithReferences`

The `DerivationGoal::derivationType` field had a bogus initialization,
now caught, so I made it `std::optional`. I think #8829 can make it
non-optional again because it will ensure we always have the derivation
when we construct a `DerivationGoal`.

See that issue (#7479) for details on the general goal.

`git grep 'Raw::Raw'` indicates the two types I didn't yet convert
`DerivedPath` and `BuiltPath` (and their `Single` variants) . This is
because @roberth and I (can't find issue right now...) plan on reworking
them somewhat, so I didn't want to churn them more just yet.

Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
This commit is contained in:
John Ericson 2023-08-16 12:29:23 -04:00
parent 284c180732
commit 9121fed4b4
29 changed files with 355 additions and 334 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
src/libcmd/installable-attr-path.cc
View file

@ -80,7 +80,7 @@ DerivedPathsWithInfo InstallableAttrPath::toDerivedPaths()
[&](const ExtendedOutputsSpec::Explicit & e) -> OutputsSpec {
return e;
},
}, extendedOutputsSpec.raw());
}, extendedOutputsSpec.raw);
auto [iter, didInsert] = byDrvPath.emplace(*drvPath, newOutputs);
@ -96,6 +96,7 @@ DerivedPathsWithInfo InstallableAttrPath::toDerivedPaths()
.outputs = outputs,
},
.info = make_ref<ExtraPathInfoValue>(ExtraPathInfoValue::Value {
.extendedOutputsSpec = outputs,
/* FIXME: reconsider backwards compatibility above
so we can fill in this info. */
}),
@ -114,7 +115,7 @@ InstallableAttrPath InstallableAttrPath::parse(
return {
state, cmd, v,
prefix == "." ? "" : std::string { prefix },
extendedOutputsSpec
std::move(extendedOutputsSpec),
};
}

2
src/libcmd/installable-derived-path.cc
View file

@ -55,7 +55,7 @@ InstallableDerivedPath InstallableDerivedPath::parse(
.outputs = outputSpec,
};
},
}, extendedOutputsSpec.raw());
}, extendedOutputsSpec.raw);
return InstallableDerivedPath {
store,
std::move(derivedPath),

2
src/libcmd/installable-flake.cc
View file

@ -141,7 +141,7 @@ DerivedPathsWithInfo InstallableFlake::toDerivedPaths()
[&](const ExtendedOutputsSpec::Explicit & e) -> OutputsSpec {
return e;
},
}, extendedOutputsSpec.raw()),
}, extendedOutputsSpec.raw),
},
.info = make_ref<ExtraPathInfoFlake>(
ExtraPathInfoValue::Value {

6
src/libcmd/installables.cc
View file

@ -459,7 +459,7 @@ Installables SourceExprCommand::parseInstallables(
result.push_back(
make_ref<InstallableAttrPath>(
InstallableAttrPath::parse(
state, *this, vFile, prefix, extendedOutputsSpec)));
state, *this, vFile, std::move(prefix), std::move(extendedOutputsSpec))));
}
} else {
@ -475,7 +475,7 @@ Installables SourceExprCommand::parseInstallables(
if (prefix.find('/') != std::string::npos) {
try {
result.push_back(make_ref<InstallableDerivedPath>(
InstallableDerivedPath::parse(store, prefix, extendedOutputsSpec)));
InstallableDerivedPath::parse(store, prefix, extendedOutputsSpec.raw)));
continue;
} catch (BadStorePath &) {
} catch (...) {
@ -491,7 +491,7 @@ Installables SourceExprCommand::parseInstallables(
getEvalState(),
std::move(flakeRef),
fragment,
extendedOutputsSpec,
std::move(extendedOutputsSpec),
getDefaultFlakeAttrPaths(),
getDefaultFlakeAttrPathPrefixes(),
lockFlags));

2
src/libexpr/eval-cache.cc
View file

@ -604,7 +604,7 @@ string_t AttrCursor::getStringWithContext()
[&](const NixStringContextElem::Opaque & o) -> const StorePath & {
return o.path;
},
}, c.raw());
}, c.raw);
if (!root->state.store->isValidPath(path)) {
valid = false;
break;

2
src/libexpr/eval.cc
View file

@ -2364,7 +2364,7 @@ std::pair<SingleDerivedPath, std::string_view> EvalState::coerceToSingleDerivedP
[&](NixStringContextElem::Built && b) -> SingleDerivedPath {
return std::move(b);
},
}, ((NixStringContextElem &&) *context.begin()).raw());
}, ((NixStringContextElem &&) *context.begin()).raw);
return {
std::move(derivedPath),
std::move(s),

2
src/libexpr/flake/flakeref.cc
View file

@ -246,7 +246,7 @@ std::tuple<FlakeRef, std::string, ExtendedOutputsSpec> parseFlakeRefWithFragment
{
auto [prefix, extendedOutputsSpec] = ExtendedOutputsSpec::parse(url);
auto [flakeRef, fragment] = parseFlakeRefWithFragment(std::string { prefix }, baseDir, allowMissing, isFlake);
return {std::move(flakeRef), fragment, extendedOutputsSpec};
return {std::move(flakeRef), fragment, std::move(extendedOutputsSpec)};
}
}

14
src/libexpr/primops.cc
View file

@ -69,7 +69,7 @@ StringMap EvalState::realiseContext(const NixStringContext & context)
res.insert_or_assign(ctxS, ctxS);
ensureValid(d.drvPath);
},
}, c.raw());
}, c.raw);
}
if (drvs.empty()) return {};
@ -1265,7 +1265,7 @@ drvName, Bindings * attrs, Value & v)
[&](const NixStringContextElem::Opaque & o) {
drv.inputSrcs.insert(o.path);
},
}, c.raw());
}, c.raw);
}
/* Do we have all required attributes? */
@ -1334,13 +1334,13 @@ drvName, Bindings * attrs, Value & v)
if (isImpure)
drv.outputs.insert_or_assign(i,
DerivationOutput::Impure {
.method = method.raw,
.method = method,
.hashType = ht,
});
else
drv.outputs.insert_or_assign(i,
DerivationOutput::CAFloating {
.method = method.raw,
.method = method,
.hashType = ht,
});
}
@ -1373,7 +1373,7 @@ drvName, Bindings * attrs, Value & v)
drv.env[i] = state.store->printStorePath(outPath);
drv.outputs.insert_or_assign(
i,
DerivationOutputInputAddressed {
DerivationOutput::InputAddressed {
.path = std::move(outPath),
});
}
@ -1381,7 +1381,7 @@ drvName, Bindings * attrs, Value & v)
;
case DrvHash::Kind::Deferred:
for (auto & i : outputs) {
drv.outputs.insert_or_assign(i, DerivationOutputDeferred {});
drv.outputs.insert_or_assign(i, DerivationOutput::Deferred {});
}
}
}
@ -2054,7 +2054,7 @@ static void prim_toFile(EvalState & state, const PosIdx pos, Value * * args, Val
StorePathSet refs;
for (auto c : context) {
if (auto p = std::get_if<NixStringContextElem::Opaque>(&c))
if (auto p = std::get_if<NixStringContextElem::Opaque>(&c.raw))
refs.insert(p->path);
else
state.debugThrowLastTrace(EvalError({

6
src/libexpr/primops/context.cc
View file

@ -51,13 +51,13 @@ static void prim_unsafeDiscardOutputDependency(EvalState & state, const PosIdx p
NixStringContext context2;
for (auto && c : context) {
if (auto * ptr = std::get_if<NixStringContextElem::DrvDeep>(&c)) {
if (auto * ptr = std::get_if<NixStringContextElem::DrvDeep>(&c.raw)) {
context2.emplace(NixStringContextElem::Opaque {
.path = ptr->drvPath
});
} else {
/* Can reuse original item */
context2.emplace(std::move(c));
context2.emplace(std::move(c).raw);
}
}
@ -114,7 +114,7 @@ static void prim_getContext(EvalState & state, const PosIdx pos, Value * * args,
[&](NixStringContextElem::Opaque && o) {
contextInfos[std::move(o.path)].path = true;
},
}, ((NixStringContextElem &&) i).raw());
}, ((NixStringContextElem &&) i).raw);
}
auto attrs = state.buildBindings(contextInfos.size());

8
src/libexpr/tests/value/context.cc
View file

@ -47,7 +47,7 @@ TEST(NixStringContextElemTest, slash_invalid) {
TEST(NixStringContextElemTest, opaque) {
std::string_view opaque = "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x";
auto elem = NixStringContextElem::parse(opaque);
auto * p = std::get_if<NixStringContextElem::Opaque>(&elem);
auto * p = std::get_if<NixStringContextElem::Opaque>(&elem.raw);
ASSERT_TRUE(p);
ASSERT_EQ(p->path, StorePath { opaque });
ASSERT_EQ(elem.to_string(), opaque);
@ -60,7 +60,7 @@ TEST(NixStringContextElemTest, opaque) {
TEST(NixStringContextElemTest, drvDeep) {
std::string_view drvDeep = "=g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
auto elem = NixStringContextElem::parse(drvDeep);
auto * p = std::get_if<NixStringContextElem::DrvDeep>(&elem);
auto * p = std::get_if<NixStringContextElem::DrvDeep>(&elem.raw);
ASSERT_TRUE(p);
ASSERT_EQ(p->drvPath, StorePath { drvDeep.substr(1) });
ASSERT_EQ(elem.to_string(), drvDeep);
@ -73,7 +73,7 @@ TEST(NixStringContextElemTest, drvDeep) {
TEST(NixStringContextElemTest, built_opaque) {
std::string_view built = "!foo!g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
auto elem = NixStringContextElem::parse(built);
auto * p = std::get_if<NixStringContextElem::Built>(&elem);
auto * p = std::get_if<NixStringContextElem::Built>(&elem.raw);
ASSERT_TRUE(p);
ASSERT_EQ(p->output, "foo");
ASSERT_EQ(*p->drvPath, ((SingleDerivedPath) SingleDerivedPath::Opaque {
@ -96,7 +96,7 @@ TEST(NixStringContextElemTest, built_built) {
std::string_view built = "!foo!bar!g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
auto elem = NixStringContextElem::parse(built, mockXpSettings);
auto * p = std::get_if<NixStringContextElem::Built>(&elem);
auto * p = std::get_if<NixStringContextElem::Built>(&elem.raw);
ASSERT_TRUE(p);
ASSERT_EQ(p->output, "foo");
auto * drvPath = std::get_if<SingleDerivedPath::Built>(&*p->drvPath);

2
src/libexpr/value/context.cc
View file

@ -99,7 +99,7 @@ std::string NixStringContextElem::to_string() const
res += '=';
res += d.drvPath.to_string();
},
}, raw());
}, raw);
return res;
}

38
src/libexpr/value/context.hh
View file

@ -4,8 +4,7 @@
#include "util.hh"
#include "comparator.hh"
#include "derived-path.hh"
#include <variant>
#include "variant-wrapper.hh"
#include <nlohmann/json_fwd.hpp>
@ -26,12 +25,13 @@ public:
}
};
struct NixStringContextElem {
/**
* Plain opaque path to some store object.
*
* Encoded as just the path: ‘<path>’.
*/
typedef SingleDerivedPath::Opaque NixStringContextElem_Opaque;
using Opaque = SingleDerivedPath::Opaque;
/**
* Path to a derivation and its entire build closure.
@ -42,10 +42,10 @@ typedef SingleDerivedPath::Opaque NixStringContextElem_Opaque;
*
* Encoded in the form ‘=<drvPath>’.
*/
struct NixStringContextElem_DrvDeep {
struct DrvDeep {
StorePath drvPath;
GENERATE_CMP(NixStringContextElem_DrvDeep, me->drvPath);
GENERATE_CMP(DrvDeep, me->drvPath);
};
/**
@ -53,31 +53,19 @@ struct NixStringContextElem_DrvDeep {
*
* Encoded in the form ‘!<output>!<drvPath>’.
*/
typedef SingleDerivedPath::Built NixStringContextElem_Built;
using Built = SingleDerivedPath::Built;
using _NixStringContextElem_Raw = std::variant<
NixStringContextElem_Opaque,
NixStringContextElem_DrvDeep,
NixStringContextElem_Built
using Raw = std::variant<
Opaque,
DrvDeep,
Built
>;
struct NixStringContextElem : _NixStringContextElem_Raw {
using Raw = _NixStringContextElem_Raw;
using Raw::Raw;
Raw raw;
using Opaque = NixStringContextElem_Opaque;
using DrvDeep = NixStringContextElem_DrvDeep;
using Built = NixStringContextElem_Built;
GENERATE_CMP(NixStringContextElem, me->raw);
inline const Raw & raw() const & {
return static_cast<const Raw &>(*this);
}
inline Raw & raw() & {
return static_cast<Raw &>(*this);
}
inline Raw && raw() && {
return static_cast<Raw &&>(*this);
}
MAKE_WRAPPER_CONSTRUCTOR(NixStringContextElem);
/**
* Decode a context string, one of:

7
src/libstore/build/derivation-goal.cc
View file

@ -521,7 +521,7 @@ void DerivationGoal::inputsRealised()
[&](const DerivationType::Impure &) {
return true;
}
}, drvType.raw());
}, drvType.raw);
if (resolveDrv && !fullDrv.inputDrvs.empty()) {
experimentalFeatureSettings.require(Xp::CaDerivations);
@ -996,10 +996,11 @@ void DerivationGoal::buildDone()
}
else {
assert(derivationType);
st =
dynamic_cast<NotDeterministic*>(&e) ? BuildResult::NotDeterministic :
statusOk(status) ? BuildResult::OutputRejected :
!derivationType.isSandboxed() || diskFull ? BuildResult::TransientFailure :
!derivationType->isSandboxed() || diskFull ? BuildResult::TransientFailure :
BuildResult::PermanentFailure;
}
@ -1358,7 +1359,7 @@ std::pair<bool, SingleDrvOutputs> DerivationGoal::checkPathValidity()
[&](const OutputsSpec::Names & names) {
return static_cast<StringSet>(names);
},
}, wantedOutputs.raw());
}, wantedOutputs.raw);
SingleDrvOutputs validOutputs;
for (auto & i : queryPartialDerivationOutputMap()) {

2
src/libstore/build/derivation-goal.hh
View file

@ -184,7 +184,7 @@ struct DerivationGoal : public Goal
/**
* The sort of derivation we are building.
*/
DerivationType derivationType;
std::optional<DerivationType> derivationType;
typedef void (DerivationGoal::*GoalState)();
GoalState state;

18
src/libstore/build/local-derivation-goal.cc
View file

@ -178,6 +178,8 @@ void LocalDerivationGoal::tryLocalBuild()
return;
}
assert(derivationType);
/* Are we doing a chroot build? */
{
auto noChroot = parsedDrv->getBoolAttr("__noChroot");
@ -195,7 +197,7 @@ void LocalDerivationGoal::tryLocalBuild()
else if (settings.sandboxMode == smDisabled)
useChroot = false;
else if (settings.sandboxMode == smRelaxed)
useChroot = derivationType.isSandboxed() && !noChroot;
useChroot = derivationType->isSandboxed() && !noChroot;
}
auto & localStore = getLocalStore();
@ -689,7 +691,7 @@ void LocalDerivationGoal::startBuilder()
"nogroup:x:65534:\n", sandboxGid()));
/* Create /etc/hosts with localhost entry. */
if (derivationType.isSandboxed())
if (derivationType->isSandboxed())
writeFile(chrootRootDir + "/etc/hosts", "127.0.0.1 localhost\n::1 localhost\n");
/* Make the closure of the inputs available in the chroot,
@ -893,7 +895,7 @@ void LocalDerivationGoal::startBuilder()
us.
*/
if (derivationType.isSandboxed())
if (derivationType->isSandboxed())
privateNetwork = true;
userNamespaceSync.create();
@ -1121,7 +1123,7 @@ void LocalDerivationGoal::initEnv()
derivation, tell the builder, so that for instance `fetchurl'
can skip checking the output. On older Nixes, this environment
variable won't be set, so `fetchurl' will do the check. */
if (derivationType.isFixed()) env["NIX_OUTPUT_CHECKED"] = "1";
if (derivationType->isFixed()) env["NIX_OUTPUT_CHECKED"] = "1";
/* *Only* if this is a fixed-output derivation, propagate the
values of the environment variables specified in the
@ -1132,7 +1134,7 @@ void LocalDerivationGoal::initEnv()
to the builder is generally impure, but the output of
fixed-output derivations is by definition pure (since we
already know the cryptographic hash of the output). */
if (!derivationType.isSandboxed()) {
if (!derivationType->isSandboxed()) {
for (auto & i : parsedDrv->getStringsAttr("impureEnvVars").value_or(Strings()))
env[i] = getEnv(i).value_or("");
}
@ -1797,7 +1799,7 @@ void LocalDerivationGoal::runChild()
/* Fixed-output derivations typically need to access the
network, so give them access to /etc/resolv.conf and so
on. */
if (!derivationType.isSandboxed()) {
if (!derivationType->isSandboxed()) {
// Only use nss functions to resolve hosts and
// services. Don’t use it for anything else that may
// be configured for this system. This limits the
@ -2048,7 +2050,7 @@ void LocalDerivationGoal::runChild()
#include "sandbox-defaults.sb"
;
if (!derivationType.isSandboxed())
if (!derivationType->isSandboxed())
sandboxProfile +=
#include "sandbox-network.sb"
;
@ -2599,7 +2601,7 @@ SingleDrvOutputs LocalDerivationGoal::registerOutputs()
});
},
}, output->raw());
}, output->raw);
/* FIXME: set proper permissions in restorePath() so
we don't have to do another traversal. */

5
src/libstore/build/worker.cc
View file

@ -268,7 +268,10 @@ void Worker::run(const Goals & _topGoals)
for (auto & i : _topGoals) {
topGoals.insert(i);
if (auto goal = dynamic_cast<DerivationGoal *>(i.get())) {
topPaths.push_back(DerivedPath::Built{makeConstantStorePathRef(goal->drvPath), goal->wantedOutputs});
topPaths.push_back(DerivedPath::Built {
.drvPath = makeConstantStorePathRef(goal->drvPath),
.outputs = goal->wantedOutputs,
});
} else if (auto goal = dynamic_cast<PathSubstitutionGoal *>(i.get())) {
topPaths.push_back(DerivedPath::Opaque{goal->storePath});
}

2
src/libstore/content-address.cc
View file

@ -115,7 +115,7 @@ ContentAddress ContentAddress::parse(std::string_view rawCa)
auto [caMethod, hashType] = parseContentAddressMethodPrefix(rest);
return ContentAddress {
.method = std::move(caMethod).raw,
.method = std::move(caMethod),
.hash = Hash::parseNonSRIUnprefixed(rest, hashType),
};
}

12
src/libstore/content-address.hh
View file

@ -5,6 +5,7 @@
#include "hash.hh"
#include "path.hh"
#include "comparator.hh"
#include "variant-wrapper.hh"
namespace nix {
@ -71,11 +72,7 @@ struct ContentAddressMethod
GENERATE_CMP(ContentAddressMethod, me->raw);
/* The moral equivalent of `using Raw::Raw;` */
ContentAddressMethod(auto &&... arg)
: raw(std::forward<decltype(arg)>(arg)...)
{ }
MAKE_WRAPPER_CONSTRUCTOR(ContentAddressMethod);
/**
* Parse the prefix tag which indicates how the files
@ -252,10 +249,7 @@ struct ContentAddressWithReferences
GENERATE_CMP(ContentAddressWithReferences, me->raw);
/* The moral equivalent of `using Raw::Raw;` */
ContentAddressWithReferences(auto &&... arg)
: raw(std::forward<decltype(arg)>(arg)...)
{ }
MAKE_WRAPPER_CONSTRUCTOR(ContentAddressWithReferences);
/**
* Create a `ContentAddressWithReferences` from a mere

36
src/libstore/derivations.cc
View file

@ -32,7 +32,7 @@ std::optional<StorePath> DerivationOutput::path(const Store & store, std::string
[](const DerivationOutput::Impure &) -> std::optional<StorePath> {
return std::nullopt;
},
}, raw());
}, raw);
}
@ -60,7 +60,7 @@ bool DerivationType::isCA() const
[](const Impure &) {
return true;
},
}, raw());
}, raw);
}
bool DerivationType::isFixed() const
@ -75,7 +75,7 @@ bool DerivationType::isFixed() const
[](const Impure &) {
return false;
},
}, raw());
}, raw);
}
bool DerivationType::hasKnownOutputPaths() const
@ -90,7 +90,7 @@ bool DerivationType::hasKnownOutputPaths() const
[](const Impure &) {
return false;
},
}, raw());
}, raw);
}
@ -106,7 +106,7 @@ bool DerivationType::isSandboxed() const
[](const Impure &) {
return false;
},
}, raw());
}, raw);
}
@ -122,7 +122,7 @@ bool DerivationType::isPure() const
[](const Impure &) {
return false;
},
}, raw());
}, raw);
}
@ -408,13 +408,13 @@ std::string Derivation::unparse(const Store & store, bool maskOutputs,
s += ','; printUnquotedString(s, "");
s += ','; printUnquotedString(s, "");
},
[&](const DerivationOutputImpure & doi) {
[&](const DerivationOutput::Impure & doi) {
// FIXME
s += ','; printUnquotedString(s, "");
s += ','; printUnquotedString(s, doi.method.renderPrefix() + printHashType(doi.hashType));
s += ','; printUnquotedString(s, "impure");
}
}, i.second.raw());
}, i.second.raw);
s += ')';
}
@ -509,7 +509,7 @@ DerivationType BasicDerivation::type() const
[&](const DerivationOutput::Impure &) {
impureOutputs.insert(i.first);
},
}, i.second.raw());
}, i.second.raw);
}
if (inputAddressedOutputs.empty()
@ -626,7 +626,7 @@ DrvHash hashDerivationModulo(Store & store, const Derivation & drv, bool maskOut
if (type.isFixed()) {
std::map<std::string, Hash> outputHashes;
for (const auto & i : drv.outputs) {
auto & dof = std::get<DerivationOutput::CAFixed>(i.second.raw());
auto & dof = std::get<DerivationOutput::CAFixed>(i.second.raw);
auto hash = hashString(htSHA256, "fixed:out:"
+ dof.ca.printMethodAlgo() + ":"
+ dof.ca.hash.to_string(Base16, false) + ":"
@ -663,7 +663,7 @@ DrvHash hashDerivationModulo(Store & store, const Derivation & drv, bool maskOut
[](const DerivationType::Impure &) -> DrvHash::Kind {
assert(false);
}
}, drv.type().raw());
}, drv.type().raw);
std::map<std::string, StringSet> inputs2;
for (auto & [drvPath, inputOutputs0] : drv.inputDrvs) {
@ -720,10 +720,10 @@ StringSet BasicDerivation::outputNames() const
DerivationOutputsAndOptPaths BasicDerivation::outputsAndOptPaths(const Store & store) const
{
DerivationOutputsAndOptPaths outsAndOptPaths;
for (auto output : outputs)
for (auto & [outputName, output] : outputs)
outsAndOptPaths.insert(std::make_pair(
output.first,
std::make_pair(output.second, output.second.path(store, name, output.first))
outputName,
std::make_pair(output, output.path(store, name, outputName))
)
);
return outsAndOptPaths;
@ -798,7 +798,7 @@ void writeDerivation(Sink & out, const Store & store, const BasicDerivation & dr
<< (doi.method.renderPrefix() + printHashType(doi.hashType))
<< "impure";
},
}, i.second.raw());
}, i.second.raw);
}
WorkerProto::write(store,
WorkerProto::WriteConn { .to = out },
@ -840,7 +840,7 @@ static void rewriteDerivation(Store & store, BasicDerivation & drv, const String
auto hashModulo = hashDerivationModulo(store, Derivation(drv), true);
for (auto & [outputName, output] : drv.outputs) {
if (std::holds_alternative<DerivationOutput::Deferred>(output.raw())) {
if (std::holds_alternative<DerivationOutput::Deferred>(output.raw)) {
auto h = get(hashModulo.hashes, outputName);
if (!h)
throw Error("derivation '%s' output '%s' has no hash (derivations.cc/rewriteDerivation)",
@ -955,7 +955,7 @@ void Derivation::checkInvariants(Store & store, const StorePath & drvPath) const
[&](const DerivationOutput::Impure &) {
/* Nothing to check */
},
}, i.second.raw());
}, i.second.raw);
}
}
@ -984,7 +984,7 @@ nlohmann::json DerivationOutput::toJSON(
res["hashAlgo"] = doi.method.renderPrefix() + printHashType(doi.hashType);
res["impure"] = true;
},
}, raw());
}, raw);
return res;
}

103
src/libstore/derivations.hh
View file

@ -9,6 +9,7 @@
#include "derived-path.hh"
#include "sync.hh"
#include "comparator.hh"
#include "variant-wrapper.hh"
#include <map>
#include <variant>
@ -20,21 +21,26 @@ class Store;
/* Abstract syntax of derivations. */
/**
* A single output of a BasicDerivation (and Derivation).
*/
struct DerivationOutput
{
/**
* The traditional non-fixed-output derivation type.
*/
struct DerivationOutputInputAddressed
struct InputAddressed
{
StorePath path;
GENERATE_CMP(DerivationOutputInputAddressed, me->path);
GENERATE_CMP(InputAddressed, me->path);
};
/**
* Fixed-output derivations, whose output paths are content
* addressed according to that fixed output.
*/
struct DerivationOutputCAFixed
struct CAFixed
{
/**
* Method and hash used for expected hash computation.
@ -51,7 +57,7 @@ struct DerivationOutputCAFixed
*/
StorePath path(const Store & store, std::string_view drvName, std::string_view outputName) const;
GENERATE_CMP(DerivationOutputCAFixed, me->ca);
GENERATE_CMP(CAFixed, me->ca);
};
/**
@ -59,7 +65,7 @@ struct DerivationOutputCAFixed
* addressed, but not fixed, and so are dynamically calculated from
* whatever the output ends up being.
* */
struct DerivationOutputCAFloating
struct CAFloating
{
/**
* How the file system objects will be serialized for hashing
@ -71,22 +77,22 @@ struct DerivationOutputCAFloating
*/
HashType hashType;
GENERATE_CMP(DerivationOutputCAFloating, me->method, me->hashType);
GENERATE_CMP(CAFloating, me->method, me->hashType);
};
/**
* Input-addressed output which depends on a (CA) derivation whose hash
* isn't known yet.
*/
struct DerivationOutputDeferred {
GENERATE_CMP(DerivationOutputDeferred);
struct Deferred {
GENERATE_CMP(Deferred);
};
/**
* Impure output which is moved to a content-addressed location (like
* CAFloating) but isn't registered as a realization.
*/
struct DerivationOutputImpure
struct Impure
{
/**
* How the file system objects will be serialized for hashing
@ -98,30 +104,27 @@ struct DerivationOutputImpure
*/
HashType hashType;
GENERATE_CMP(DerivationOutputImpure, me->method, me->hashType);
GENERATE_CMP(Impure, me->method, me->hashType);
};
typedef std::variant<
DerivationOutputInputAddressed,
DerivationOutputCAFixed,
DerivationOutputCAFloating,
DerivationOutputDeferred,
DerivationOutputImpure
> _DerivationOutputRaw;
InputAddressed,
CAFixed,
CAFloating,
Deferred,
Impure
> Raw;
Raw raw;
GENERATE_CMP(DerivationOutput, me->raw);
MAKE_WRAPPER_CONSTRUCTOR(DerivationOutput);
/**
* A single output of a BasicDerivation (and Derivation).
* Force choosing a variant
*/
struct DerivationOutput : _DerivationOutputRaw
{
using Raw = _DerivationOutputRaw;
using Raw::Raw;
using InputAddressed = DerivationOutputInputAddressed;
using CAFixed = DerivationOutputCAFixed;
using CAFloating = DerivationOutputCAFloating;
using Deferred = DerivationOutputDeferred;
using Impure = DerivationOutputImpure;
DerivationOutput() = delete;
/**
* \note when you use this function you should make sure that you're
@ -131,10 +134,6 @@ struct DerivationOutput : _DerivationOutputRaw
*/
std::optional<StorePath> path(const Store & store, std::string_view drvName, std::string_view outputName) const;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
nlohmann::json toJSON(
const Store & store,
std::string_view drvName,
@ -167,29 +166,32 @@ typedef std::map<std::string, std::pair<DerivationOutput, std::optional<StorePat
*/
typedef std::map<StorePath, StringSet> DerivationInputs;
struct DerivationType {
/**
* Input-addressed derivation types
*/
struct DerivationType_InputAddressed {
struct InputAddressed {
/**
* True iff the derivation type can't be determined statically,
* for instance because it (transitively) depends on a content-addressed
* derivation.
*/
bool deferred;
GENERATE_CMP(InputAddressed, me->deferred);
};
/**
* Content-addressed derivation types
*/
struct DerivationType_ContentAddressed {
struct ContentAddressed {
/**
* Whether the derivation should be built safely inside a sandbox.
*/
bool sandboxed;
/**
* Whether the derivation's outputs' content-addresses are "fixed"
* or "floating.
* or "floating".
*
* - Fixed: content-addresses are written down as part of the
* derivation itself. If the outputs don't end up matching the
@ -199,6 +201,8 @@ struct DerivationType_ContentAddressed {
* know them until we perform the build.
*/
bool fixed;
GENERATE_CMP(ContentAddressed, me->sandboxed, me->fixed);
};
/**
@ -207,21 +211,26 @@ struct DerivationType_ContentAddressed {
* This is similar at buil-time to the content addressed, not standboxed, not fixed
* type, but has some restrictions on its usage.
*/
struct DerivationType_Impure {
struct Impure {
GENERATE_CMP(Impure);
};
typedef std::variant<
DerivationType_InputAddressed,
DerivationType_ContentAddressed,
DerivationType_Impure
> _DerivationTypeRaw;
InputAddressed,
ContentAddressed,
Impure
> Raw;
struct DerivationType : _DerivationTypeRaw {
using Raw = _DerivationTypeRaw;
using Raw::Raw;
using InputAddressed = DerivationType_InputAddressed;
using ContentAddressed = DerivationType_ContentAddressed;
using Impure = DerivationType_Impure;
Raw raw;
GENERATE_CMP(DerivationType, me->raw);
MAKE_WRAPPER_CONSTRUCTOR(DerivationType);
/**
* Force choosing a variant
*/
DerivationType() = delete;
/**
* Do the outputs of the derivation have paths calculated from their
@ -257,10 +266,6 @@ struct DerivationType : _DerivationTypeRaw {
* closure, or if fixed output.
*/
bool hasKnownOutputPaths() const;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
};
struct BasicDerivation

8
src/libstore/misc.cc
View file

@ -88,7 +88,7 @@ const ContentAddress * getDerivationCA(const BasicDerivation & drv)
auto out = drv.outputs.find("out");
if (out == drv.outputs.end())
return nullptr;
if (auto dof = std::get_if<DerivationOutput::CAFixed>(&out->second)) {
if (auto dof = std::get_if<DerivationOutput::CAFixed>(&out->second.raw)) {
return &dof->ca;
}
return nullptr;
@ -370,7 +370,7 @@ OutputPathMap resolveDerivedPath(Store & store, const DerivedPath::Built & bfd,
}
return outputsOpt;
},
}, bfd.outputs.raw());
}, bfd.outputs.raw);
OutputPathMap outputs;
for (auto & [outputName, outputPathOpt] : outputsOpt) {
@ -418,7 +418,7 @@ OutputPathMap resolveDerivedPath(Store & store, const DerivedPath::Built & bfd)
[&](const OutputsSpec::Names & names) {
return static_cast<StringSet>(names);
},
}, bfd.outputs.raw());
}, bfd.outputs.raw);
for (auto iter = outputMap.begin(); iter != outputMap.end();) {
auto & outputName = iter->first;
if (bfd.outputs.contains(outputName)) {
@ -431,7 +431,7 @@ OutputPathMap resolveDerivedPath(Store & store, const DerivedPath::Built & bfd)
if (!outputsLeft.empty())
throw Error("derivation '%s' does not have an outputs %s",
store.printStorePath(drvPath),
concatStringsSep(", ", quoteStrings(std::get<OutputsSpec::Names>(bfd.outputs))));
concatStringsSep(", ", quoteStrings(std::get<OutputsSpec::Names>(bfd.outputs.raw))));
return outputMap;
}

20
src/libstore/outputs-spec.cc
View file

@ -17,7 +17,7 @@ bool OutputsSpec::contains(const std::string & outputName) const
[&](const OutputsSpec::Names & outputNames) {
return outputNames.count(outputName) > 0;
},
}, raw());
}, raw);
}
static std::string outputSpecRegexStr =
@ -49,7 +49,7 @@ OutputsSpec OutputsSpec::parse(std::string_view s)
std::optional spec = parseOpt(s);
if (!spec)
throw Error("invalid outputs specifier '%s'", s);
return *spec;
return std::move(*spec);
}
@ -85,7 +85,7 @@ std::string OutputsSpec::to_string() const
[&](const OutputsSpec::Names & outputNames) -> std::string {
return concatStringsSep(",", outputNames);
},
}, raw());
}, raw);
}
@ -98,7 +98,7 @@ std::string ExtendedOutputsSpec::to_string() const
[&](const ExtendedOutputsSpec::Explicit & outputSpec) -> std::string {
return "^" + outputSpec.to_string();
},
}, raw());
}, raw);
}
@ -118,9 +118,9 @@ OutputsSpec OutputsSpec::union_(const OutputsSpec & that) const
ret.insert(thoseNames.begin(), thoseNames.end());
return ret;
},
}, that.raw());
}, that.raw);
},
}, raw());
}, raw);
}
@ -142,9 +142,9 @@ bool OutputsSpec::isSubsetOf(const OutputsSpec & that) const
ret = false;
return ret;
},
}, raw());
}, raw);
},
}, that.raw());
}, that.raw);
}
}
@ -169,7 +169,7 @@ void adl_serializer<OutputsSpec>::to_json(json & json, OutputsSpec t) {
[&](const OutputsSpec::Names & names) {
json = names;
},
}, t.raw());
}, t.raw);
}
@ -189,7 +189,7 @@ void adl_serializer<ExtendedOutputsSpec>::to_json(json & json, ExtendedOutputsSp
[&](const ExtendedOutputsSpec::Explicit & e) {
adl_serializer<OutputsSpec>::to_json(json, e);
},
}, t.raw());
}, t.raw);
}
}

61
src/libstore/outputs-spec.hh
View file

@ -6,62 +6,57 @@
#include <set>
#include <variant>
#include "comparator.hh"
#include "json-impls.hh"
#include "comparator.hh"
#include "variant-wrapper.hh"
namespace nix {
struct OutputsSpec {
/**
* A non-empty set of outputs, specified by name
*/
struct OutputNames : std::set<std::string> {
struct Names : std::set<std::string> {
using std::set<std::string>::set;
/* These need to be "inherited manually" */
OutputNames(const std::set<std::string> & s)
Names(const std::set<std::string> & s)
: std::set<std::string>(s)
{ assert(!empty()); }
/**
* Needs to be "inherited manually"
*/
OutputNames(std::set<std::string> && s)
Names(std::set<std::string> && s)
: std::set<std::string>(s)
{ assert(!empty()); }
/* This set should always be non-empty, so we delete this
constructor in order make creating empty ones by mistake harder.
*/
OutputNames() = delete;
Names() = delete;
};
/**
* The set of all outputs, without needing to name them explicitly
*/
struct AllOutputs : std::monostate { };
struct All : std::monostate { };
typedef std::variant<AllOutputs, OutputNames> _OutputsSpecRaw;
typedef std::variant<All, Names> Raw;
struct OutputsSpec : _OutputsSpecRaw {
using Raw = _OutputsSpecRaw;
using Raw::Raw;
Raw raw;
GENERATE_CMP(OutputsSpec, me->raw);
MAKE_WRAPPER_CONSTRUCTOR(OutputsSpec);
/**
* Force choosing a variant
*/
OutputsSpec() = delete;
using Names = OutputNames;
using All = AllOutputs;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
inline Raw & raw() {
return static_cast<Raw &>(*this);
}
bool contains(const std::string & output) const;
/**
@ -84,20 +79,22 @@ struct OutputsSpec : _OutputsSpecRaw {
std::string to_string() const;
};
struct DefaultOutputs : std::monostate { };
typedef std::variant<DefaultOutputs, OutputsSpec> _ExtendedOutputsSpecRaw;
struct ExtendedOutputsSpec : _ExtendedOutputsSpecRaw {
using Raw = _ExtendedOutputsSpecRaw;
using Raw::Raw;
using Default = DefaultOutputs;
struct ExtendedOutputsSpec {
struct Default : std::monostate { };
using Explicit = OutputsSpec;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
typedef std::variant<Default, Explicit> Raw;
Raw raw;
GENERATE_CMP(ExtendedOutputsSpec, me->raw);
MAKE_WRAPPER_CONSTRUCTOR(ExtendedOutputsSpec);
/**
* Force choosing a variant
*/
ExtendedOutputsSpec() = delete;
/**
* Parse a string of the form 'prefix^output1,...outputN' or

2
src/libstore/path-with-outputs.cc
View file

@ -63,7 +63,7 @@ StorePathWithOutputs::ParseResult StorePathWithOutputs::tryFromDerivedPath(const
[&](const OutputsSpec::Names & outputs) {
return static_cast<StringSet>(outputs);
},
}, bfd.outputs.raw()),
}, bfd.outputs.raw),
};
},
[&](const SingleDerivedPath::Built &) -> StorePathWithOutputs::ParseResult {

30
src/libutil/variant-wrapper.hh Normal file
View file

@ -0,0 +1,30 @@
#pragma once
///@file
// not used, but will be used by callers
#include <variant>
/**
* Force the default versions of all constructors (copy, move, copy
* assignment).
*/
#define FORCE_DEFAULT_CONSTRUCTORS(CLASS_NAME) \
CLASS_NAME(const CLASS_NAME &) = default; \
CLASS_NAME(CLASS_NAME &) = default; \
CLASS_NAME(CLASS_NAME &&) = default; \
\
CLASS_NAME & operator =(const CLASS_NAME &) = default; \
CLASS_NAME & operator =(CLASS_NAME &) = default;
/**
* Make a wrapper constructor. All args are forwarded to the
* construction of the "raw" field. (Which we assume is the only one.)
*
* The moral equivalent of `using Raw::Raw;`
*/
#define MAKE_WRAPPER_CONSTRUCTOR(CLASS_NAME) \
FORCE_DEFAULT_CONSTRUCTORS(CLASS_NAME) \
\
CLASS_NAME(auto &&... arg) \
: raw(std::forward<decltype(arg)>(arg)...) \
{ }

2
src/nix/app.cc
View file

@ -81,7 +81,7 @@ UnresolvedApp InstallableValue::toApp(EvalState & state)
.path = o.path,
};
},
}, c.raw()));
}, c.raw));
}
return UnresolvedApp{App {

2
src/nix/bundle.cc
View file

@ -80,7 +80,7 @@ struct CmdBundle : InstallableValueCommand
auto [bundlerFlakeRef, bundlerName, extendedOutputsSpec] = parseFlakeRefWithFragmentAndExtendedOutputsSpec(bundler, absPath("."));
const flake::LockFlags lockFlags{ .writeLockFile = false };
InstallableFlake bundler{this,
evalState, std::move(bundlerFlakeRef), bundlerName, extendedOutputsSpec,
evalState, std::move(bundlerFlakeRef), bundlerName, std::move(extendedOutputsSpec),
{"bundlers." + settings.thisSystem.get() + ".default",
"defaultBundler." + settings.thisSystem.get()
},

2
src/nix/develop.cc
View file

@ -547,7 +547,7 @@ struct CmdDevelop : Common, MixEnvironment
state,
std::move(nixpkgs),
"bashInteractive",
DefaultOutputs(),
ExtendedOutputsSpec::Default(),
Strings{},
Strings{"legacyPackages." + settings.thisSystem.get() + "."},
nixpkgsLockFlags);

2
src/nix/flake.cc
View file

@ -778,7 +778,7 @@ struct CmdFlakeInitCommon : virtual Args, EvalCommand
auto [templateFlakeRef, templateName] = parseFlakeRefWithFragment(templateUrl, absPath("."));
auto installable = InstallableFlake(nullptr,
evalState, std::move(templateFlakeRef), templateName, DefaultOutputs(),
evalState, std::move(templateFlakeRef), templateName, ExtendedOutputsSpec::Default(),
defaultTemplateAttrPaths,
defaultTemplateAttrPathsPrefixes,
lockFlags);