Merge pull request #8839 from obsidiansystems/string-context-7479

Refactor Raw pattern, part of #7479
This commit is contained in:
John Ericson 2023-08-18 13:47:01 -04:00 committed by GitHub
commit 665ad4f7c5
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GPG key ID: 4AEE18F83AFDEB23
29 changed files with 355 additions and 334 deletions

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

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

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

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

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

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

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

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

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

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

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

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@ -4,8 +4,7 @@
#include "util.hh" #include "util.hh"
#include "comparator.hh" #include "comparator.hh"
#include "derived-path.hh" #include "derived-path.hh"
#include "variant-wrapper.hh"
#include <variant>
#include <nlohmann/json_fwd.hpp> #include <nlohmann/json_fwd.hpp>
@ -26,58 +25,47 @@ public:
} }
}; };
/** struct NixStringContextElem {
* Plain opaque path to some store object. /**
* * Plain opaque path to some store object.
* Encoded as just the path: <path>. *
*/ * Encoded as just the path: <path>.
typedef SingleDerivedPath::Opaque NixStringContextElem_Opaque; */
using Opaque = SingleDerivedPath::Opaque;
/** /**
* Path to a derivation and its entire build closure. * Path to a derivation and its entire build closure.
* *
* The path doesn't just refer to derivation itself and its closure, but * The path doesn't just refer to derivation itself and its closure, but
* also all outputs of all derivations in that closure (including the * also all outputs of all derivations in that closure (including the
* root derivation). * root derivation).
* *
* Encoded in the form =<drvPath>. * Encoded in the form =<drvPath>.
*/ */
struct NixStringContextElem_DrvDeep { struct DrvDeep {
StorePath drvPath; StorePath drvPath;
GENERATE_CMP(NixStringContextElem_DrvDeep, me->drvPath); GENERATE_CMP(DrvDeep, me->drvPath);
}; };
/** /**
* Derivation output. * Derivation output.
* *
* Encoded in the form !<output>!<drvPath>. * Encoded in the form !<output>!<drvPath>.
*/ */
typedef SingleDerivedPath::Built NixStringContextElem_Built; using Built = SingleDerivedPath::Built;
using _NixStringContextElem_Raw = std::variant< using Raw = std::variant<
NixStringContextElem_Opaque, Opaque,
NixStringContextElem_DrvDeep, DrvDeep,
NixStringContextElem_Built Built
>; >;
struct NixStringContextElem : _NixStringContextElem_Raw { Raw raw;
using Raw = _NixStringContextElem_Raw;
using Raw::Raw;
using Opaque = NixStringContextElem_Opaque; GENERATE_CMP(NixStringContextElem, me->raw);
using DrvDeep = NixStringContextElem_DrvDeep;
using Built = NixStringContextElem_Built;
inline const Raw & raw() const & { MAKE_WRAPPER_CONSTRUCTOR(NixStringContextElem);
return static_cast<const Raw &>(*this);
}
inline Raw & raw() & {
return static_cast<Raw &>(*this);
}
inline Raw && raw() && {
return static_cast<Raw &&>(*this);
}
/** /**
* Decode a context string, one of: * Decode a context string, one of:

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

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

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

View file

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

View file

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

View file

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

View file

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

View file

@ -9,6 +9,7 @@
#include "derived-path.hh" #include "derived-path.hh"
#include "sync.hh" #include "sync.hh"
#include "comparator.hh" #include "comparator.hh"
#include "variant-wrapper.hh"
#include <map> #include <map>
#include <variant> #include <variant>
@ -20,108 +21,110 @@ class Store;
/* Abstract syntax of derivations. */ /* Abstract syntax of derivations. */
/**
* The traditional non-fixed-output derivation type.
*/
struct DerivationOutputInputAddressed
{
StorePath path;
GENERATE_CMP(DerivationOutputInputAddressed, me->path);
};
/**
* Fixed-output derivations, whose output paths are content
* addressed according to that fixed output.
*/
struct DerivationOutputCAFixed
{
/**
* Method and hash used for expected hash computation.
*
* References are not allowed by fiat.
*/
ContentAddress ca;
/**
* Return the \ref StorePath "store path" corresponding to this output
*
* @param drvName The name of the derivation this is an output of, without the `.drv`.
* @param outputName The name of this output.
*/
StorePath path(const Store & store, std::string_view drvName, std::string_view outputName) const;
GENERATE_CMP(DerivationOutputCAFixed, me->ca);
};
/**
* Floating-output derivations, whose output paths are content
* addressed, but not fixed, and so are dynamically calculated from
* whatever the output ends up being.
* */
struct DerivationOutputCAFloating
{
/**
* How the file system objects will be serialized for hashing
*/
ContentAddressMethod method;
/**
* How the serialization will be hashed
*/
HashType hashType;
GENERATE_CMP(DerivationOutputCAFloating, me->method, me->hashType);
};
/**
* Input-addressed output which depends on a (CA) derivation whose hash
* isn't known yet.
*/
struct DerivationOutputDeferred {
GENERATE_CMP(DerivationOutputDeferred);
};
/**
* Impure output which is moved to a content-addressed location (like
* CAFloating) but isn't registered as a realization.
*/
struct DerivationOutputImpure
{
/**
* How the file system objects will be serialized for hashing
*/
ContentAddressMethod method;
/**
* How the serialization will be hashed
*/
HashType hashType;
GENERATE_CMP(DerivationOutputImpure, me->method, me->hashType);
};
typedef std::variant<
DerivationOutputInputAddressed,
DerivationOutputCAFixed,
DerivationOutputCAFloating,
DerivationOutputDeferred,
DerivationOutputImpure
> _DerivationOutputRaw;
/** /**
* A single output of a BasicDerivation (and Derivation). * A single output of a BasicDerivation (and Derivation).
*/ */
struct DerivationOutput : _DerivationOutputRaw struct DerivationOutput
{ {
using Raw = _DerivationOutputRaw; /**
using Raw::Raw; * The traditional non-fixed-output derivation type.
*/
struct InputAddressed
{
StorePath path;
using InputAddressed = DerivationOutputInputAddressed; GENERATE_CMP(InputAddressed, me->path);
using CAFixed = DerivationOutputCAFixed; };
using CAFloating = DerivationOutputCAFloating;
using Deferred = DerivationOutputDeferred; /**
using Impure = DerivationOutputImpure; * Fixed-output derivations, whose output paths are content
* addressed according to that fixed output.
*/
struct CAFixed
{
/**
* Method and hash used for expected hash computation.
*
* References are not allowed by fiat.
*/
ContentAddress ca;
/**
* Return the \ref StorePath "store path" corresponding to this output
*
* @param drvName The name of the derivation this is an output of, without the `.drv`.
* @param outputName The name of this output.
*/
StorePath path(const Store & store, std::string_view drvName, std::string_view outputName) const;
GENERATE_CMP(CAFixed, me->ca);
};
/**
* Floating-output derivations, whose output paths are content
* addressed, but not fixed, and so are dynamically calculated from
* whatever the output ends up being.
* */
struct CAFloating
{
/**
* How the file system objects will be serialized for hashing
*/
ContentAddressMethod method;
/**
* How the serialization will be hashed
*/
HashType hashType;
GENERATE_CMP(CAFloating, me->method, me->hashType);
};
/**
* Input-addressed output which depends on a (CA) derivation whose hash
* isn't known yet.
*/
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 Impure
{
/**
* How the file system objects will be serialized for hashing
*/
ContentAddressMethod method;
/**
* How the serialization will be hashed
*/
HashType hashType;
GENERATE_CMP(Impure, me->method, me->hashType);
};
typedef std::variant<
InputAddressed,
CAFixed,
CAFloating,
Deferred,
Impure
> Raw;
Raw raw;
GENERATE_CMP(DerivationOutput, me->raw);
MAKE_WRAPPER_CONSTRUCTOR(DerivationOutput);
/**
* Force choosing a variant
*/
DerivationOutput() = delete;
/** /**
* \note when you use this function you should make sure that you're * \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; 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( nlohmann::json toJSON(
const Store & store, const Store & store,
std::string_view drvName, std::string_view drvName,
@ -167,61 +166,71 @@ typedef std::map<std::string, std::pair<DerivationOutput, std::optional<StorePat
*/ */
typedef std::map<StorePath, StringSet> DerivationInputs; typedef std::map<StorePath, StringSet> DerivationInputs;
/** struct DerivationType {
* Input-addressed derivation types
*/
struct DerivationType_InputAddressed {
/** /**
* True iff the derivation type can't be determined statically, * Input-addressed derivation types
* for instance because it (transitively) depends on a content-addressed
* derivation.
*/
bool deferred;
};
/**
* Content-addressed derivation types
*/
struct DerivationType_ContentAddressed {
/**
* Whether the derivation should be built safely inside a sandbox.
*/ */
bool sandboxed; 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);
};
/** /**
* Whether the derivation's outputs' content-addresses are "fixed" * Content-addressed derivation types
* or "floating.
*
* - Fixed: content-addresses are written down as part of the
* derivation itself. If the outputs don't end up matching the
* build fails.
*
* - Floating: content-addresses are not written down, we do not
* know them until we perform the build.
*/ */
bool fixed; 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".
*
* - Fixed: content-addresses are written down as part of the
* derivation itself. If the outputs don't end up matching the
* build fails.
*
* - Floating: content-addresses are not written down, we do not
* know them until we perform the build.
*/
bool fixed;
/** GENERATE_CMP(ContentAddressed, me->sandboxed, me->fixed);
* Impure derivation type };
*
* 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 {
};
typedef std::variant< /**
DerivationType_InputAddressed, * Impure derivation type
DerivationType_ContentAddressed, *
DerivationType_Impure * This is similar at buil-time to the content addressed, not standboxed, not fixed
> _DerivationTypeRaw; * type, but has some restrictions on its usage.
*/
struct Impure {
GENERATE_CMP(Impure);
};
struct DerivationType : _DerivationTypeRaw { typedef std::variant<
using Raw = _DerivationTypeRaw; InputAddressed,
using Raw::Raw; ContentAddressed,
using InputAddressed = DerivationType_InputAddressed; Impure
using ContentAddressed = DerivationType_ContentAddressed; > Raw;
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 * Do the outputs of the derivation have paths calculated from their
@ -257,10 +266,6 @@ struct DerivationType : _DerivationTypeRaw {
* closure, or if fixed output. * closure, or if fixed output.
*/ */
bool hasKnownOutputPaths() const; bool hasKnownOutputPaths() const;
inline const Raw & raw() const {
return static_cast<const Raw &>(*this);
}
}; };
struct BasicDerivation struct BasicDerivation

View file

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

View file

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

View file

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

View file

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

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)...) \
{ }

View file

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

View file

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

View file

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

View file

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