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DerivationBuilderImpl: Drop std::optional from derivationType

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No point in computing this lazily, since it's pretty much the first
thing the DerivationBuilder does.
This commit is contained in:
Eelco Dolstra 2025-05-26 17:12:54 +02:00 • committed by Jörg Thalheim
parent 6adee1145f
commit aaca9711fc
1 changed files with 12 additions and 15 deletions
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27
src/libstore/unix/build/derivation-builder.cc
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@ -100,6 +100,7 @@ public:
: DerivationBuilderParams{std::move(params)}
, store{store}
, miscMethods{std::move(miscMethods)}
, derivationType{drv.type()}
{ }
LocalStore & getLocalStore();
@ -168,9 +169,9 @@ private:
/**
* The sort of derivation we are building.
*
* Just a cached value, can be recomputed from `drv`.
* Just a cached value, computed from `drv`.
*/
std::optional<DerivationType> derivationType;
const DerivationType derivationType;
/**
* Stuff we need to pass to initChild().
@ -438,9 +439,6 @@ void DerivationBuilderImpl::killSandbox(bool getStats)
bool DerivationBuilderImpl::prepareBuild()
{
/* Cache this */
derivationType = drv.type();
/* Are we doing a chroot build? */
{
if (settings.sandboxMode == smEnabled) {
@ -457,7 +455,7 @@ bool DerivationBuilderImpl::prepareBuild()
else if (settings.sandboxMode == smDisabled)
useChroot = false;
else if (settings.sandboxMode == smRelaxed)
useChroot = derivationType->isSandboxed() && !drvOptions.noChroot;
useChroot = derivationType.isSandboxed() && !drvOptions.noChroot;
}
auto & localStore = getLocalStore();
@ -594,11 +592,10 @@ std::variant<std::pair<BuildResult::Status, Error>, SingleDrvOutputs> Derivation
return std::move(builtOutputs);
} catch (BuildError & e) {
assert(derivationType);
BuildResult::Status st =
dynamic_cast<NotDeterministic*>(&e) ? BuildResult::NotDeterministic :
statusOk(status) ? BuildResult::OutputRejected :
!derivationType->isSandboxed() || diskFull ? BuildResult::TransientFailure :
!derivationType.isSandboxed() || diskFull ? BuildResult::TransientFailure :
BuildResult::PermanentFailure;
return std::pair{std::move(st), std::move(e)};
@ -1068,7 +1065,7 @@ void DerivationBuilderImpl::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,
@ -1296,7 +1293,7 @@ void DerivationBuilderImpl::startBuilder()
ProcessOptions options;
options.cloneFlags = CLONE_NEWPID | CLONE_NEWNS | CLONE_NEWIPC | CLONE_NEWUTS | CLONE_PARENT | SIGCHLD;
if (derivationType->isSandboxed())
if (derivationType.isSandboxed())
options.cloneFlags |= CLONE_NEWNET;
if (usingUserNamespace)
options.cloneFlags |= CLONE_NEWUSER;
@ -1502,7 +1499,7 @@ void DerivationBuilderImpl::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
@ -1513,7 +1510,7 @@ void DerivationBuilderImpl::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()) {
auto & impureEnv = settings.impureEnv.get();
if (!impureEnv.empty())
experimentalFeatureSettings.require(Xp::ConfigurableImpureEnv);
@ -1863,7 +1860,7 @@ void DerivationBuilderImpl::runChild()
userNamespaceSync.readSide = -1;
if (derivationType->isSandboxed()) {
if (derivationType.isSandboxed()) {
/* Initialise the loopback interface. */
AutoCloseFD fd(socket(PF_INET, SOCK_DGRAM, IPPROTO_IP));
@ -1939,7 +1936,7 @@ void DerivationBuilderImpl::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
@ -2172,7 +2169,7 @@ void DerivationBuilderImpl::runChild()
#include "sandbox-defaults.sb"
;
if (!derivationType->isSandboxed())
if (!derivationType.isSandboxed())
sandboxProfile +=
#include "sandbox-network.sb"
;