nixos/nix
1
1
Fork 0
mirror of https://github.com/NixOS/nix.git synced 2025-11-09 12:06:01 +01:00
Code Activity

DerivationGoal inline gaveUpOnSubstitution lambda

Browse source 
We can shuffle around control flow so it's only called once. You'll
definitely want to review this diff ignoring whitespace.
This commit is contained in:
John Ericson 2025-08-14 00:21:37 -04:00
parent 88275e5723
commit 14441f9382
1 changed files with 98 additions and 105 deletions
Download patch file Download diff file Expand all files Collapse all files

91
src/libstore/build/derivation-goal.cc
View file

@ -75,62 +75,19 @@ Goal::Co DerivationGoal::haveDerivation()
if (!drv->type().hasKnownOutputPaths())
experimentalFeatureSettings.require(Xp::CaDerivations);
/* At least one of the output paths could not be
produced using a substitute. So we have to build instead. */
auto gaveUpOnSubstitution = [&]() -> Goal::Co {
auto g = worker.makeDerivationBuildingGoal(drvPath, *drv, buildMode);
/* We will finish with it ourselves, as if we were the derivational goal. */
g->preserveException = true;
{
Goals waitees;
waitees.insert(g);
co_await await(std::move(waitees));
}
trace("outer build done");
buildResult = g->buildResult;
if (buildMode == bmCheck) {
/* In checking mode, the builder will not register any outputs.
So we want to make sure the ones that we wanted to check are
properly there. */
buildResult.builtOutputs = {{wantedOutput, assertPathValidity()}};
}
for (auto it = buildResult.builtOutputs.begin(); it != buildResult.builtOutputs.end();) {
if (it->first != wantedOutput) {
it = buildResult.builtOutputs.erase(it);
} else {
++it;
}
}
if (buildResult.success())
assert(buildResult.builtOutputs.count(wantedOutput) > 0);
co_return amDone(g->exitCode, g->ex);
};
for (auto & i : drv->outputsAndOptPaths(worker.store))
if (i.second.second)
worker.store.addTempRoot(*i.second.second);
{
if (auto * mOutputHash = get(staticOutputHashes(worker.evalStore, *drv), wantedOutput)) {
outputHash = *mOutputHash;
}
if (drv->type().isImpure()) {
experimentalFeatureSettings.require(Xp::ImpureDerivations);
/* We don't yet have any safe way to cache an impure derivation at
this step. */
co_return gaveUpOnSubstitution();
}
}
if (drv->type().isImpure()) {
experimentalFeatureSettings.require(Xp::ImpureDerivations);
} else {
/* Check what outputs paths are not already valid. */
auto checkResult = checkPathValidity();
@ -186,10 +143,46 @@ Goal::Co DerivationGoal::haveDerivation()
}
if (buildMode == bmCheck && !allValid)
throw Error(
"some outputs of '%s' are not valid, so checking is not possible", worker.store.printStorePath(drvPath));
"some outputs of '%s' are not valid, so checking is not possible",
worker.store.printStorePath(drvPath));
}
/* Nothing to wait for; tail call */
co_return gaveUpOnSubstitution();
/* Give up on substitution for the output we want, actually build this derivation */
auto g = worker.makeDerivationBuildingGoal(drvPath, *drv, buildMode);
/* We will finish with it ourselves, as if we were the derivational goal. */
g->preserveException = true;
{
Goals waitees;
waitees.insert(g);
co_await await(std::move(waitees));
}
trace("outer build done");
buildResult = g->buildResult;
if (buildMode == bmCheck) {
/* In checking mode, the builder will not register any outputs.
So we want to make sure the ones that we wanted to check are
properly there. */
buildResult.builtOutputs = {{wantedOutput, assertPathValidity()}};
}
for (auto it = buildResult.builtOutputs.begin(); it != buildResult.builtOutputs.end();) {
if (it->first != wantedOutput) {
it = buildResult.builtOutputs.erase(it);
} else {
++it;
}
}
if (buildResult.success())
assert(buildResult.builtOutputs.count(wantedOutput) > 0);
co_return amDone(g->exitCode, g->ex);
}
/**