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Merge pull request #4284 from tweag/fixed-output-depending-on-ca

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Allow fixed-output derivations to depend on (floating) content-addressed ones
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Eelco Dolstra 2020-12-01 20:25:41 +01:00 committed by GitHub
commit e5cf501c77
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3 changed files with 34 additions and 5 deletions
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18
src/libstore/build/derivation-goal.cc
View file

@ -493,8 +493,8 @@ void DerivationGoal::inputsRealised()
if (useDerivation) { if (useDerivation) {
auto & fullDrv = *dynamic_cast<Derivation *>(drv.get()); auto & fullDrv = *dynamic_cast<Derivation *>(drv.get());
if ((!fullDrv.inputDrvs.empty() && if ((!fullDrv.inputDrvs.empty() && derivationIsCA(fullDrv.type()))
fullDrv.type() == DerivationType::CAFloating) || fullDrv.type() == DerivationType::DeferredInputAddressed) { || fullDrv.type() == DerivationType::DeferredInputAddressed) {
/* We are be able to resolve this derivation based on the /* We are be able to resolve this derivation based on the
now-known results of dependencies. If so, we become a stub goal now-known results of dependencies. If so, we become a stub goal
aliasing that resolved derivation goal */ aliasing that resolved derivation goal */
@ -3121,6 +3121,20 @@ void DerivationGoal::registerOutputs()
newInfo0.references = refs.second; newInfo0.references = refs.second;
if (refs.first) if (refs.first)
newInfo0.references.insert(newInfo0.path); newInfo0.references.insert(newInfo0.path);
if (scratchPath != newInfo0.path) {
// Also rewrite the output path
auto source = sinkToSource([&](Sink & nextSink) {
StringSink sink;
dumpPath(actualPath, sink);
RewritingSink rsink2(oldHashPart, std::string(newInfo0.path.hashPart()), nextSink);
rsink2((unsigned char *) sink.s->data(), sink.s->size());
rsink2.flush();
});
Path tmpPath = actualPath + ".tmp";
restorePath(tmpPath, *source);
deletePath(actualPath);
movePath(tmpPath, actualPath);
}
assert(newInfo0.ca); assert(newInfo0.ca);
return newInfo0; return newInfo0;

20
tests/content-addressed.nix
View file

@ -16,14 +16,16 @@ rec {
}; };
rootCA = mkDerivation { rootCA = mkDerivation {
name = "rootCA"; name = "rootCA";
outputs = [ "out" "dev" ]; outputs = [ "out" "dev" "foo"];
buildCommand = '' buildCommand = ''
echo "building a CA derivation" echo "building a CA derivation"
echo "The seed is ${toString seed}" echo "The seed is ${toString seed}"
mkdir -p $out mkdir -p $out
echo ${rootLegacy}/hello > $out/dep echo ${rootLegacy}/hello > $out/dep
# test symlink at root ln -s $out $out/self
# test symlinks at root
ln -s $out $dev ln -s $out $dev
ln -s $out $foo
''; '';
__contentAddressed = true; __contentAddressed = true;
outputHashMode = "recursive"; outputHashMode = "recursive";
@ -34,7 +36,8 @@ rec {
buildCommand = '' buildCommand = ''
echo "building a dependent derivation" echo "building a dependent derivation"
mkdir -p $out mkdir -p $out
echo ${rootCA}/hello > $out/dep cat ${rootCA}/self/dep
echo ${rootCA}/self/dep > $out/dep
''; '';
__contentAddressed = true; __contentAddressed = true;
outputHashMode = "recursive"; outputHashMode = "recursive";
@ -60,4 +63,15 @@ rec {
echo ${rootCA}/non-ca-hello > $out/dep echo ${rootCA}/non-ca-hello > $out/dep
''; '';
}; };
dependentFixedOutput = mkDerivation {
name = "dependent-fixed-output";
outputHashMode = "recursive";
outputHashAlgo = "sha256";
outputHash = "sha256-QvtAMbUl/uvi+LCObmqOhvNOapHdA2raiI4xG5zI5pA=";
buildCommand = ''
cat ${dependentCA}/dep
echo foo > $out
'';
};
} }

1
tests/content-addressed.sh
View file

@ -40,6 +40,7 @@ testCutoff () {
#testDerivation dependentCA #testDerivation dependentCA
testCutoffFor transitivelyDependentCA testCutoffFor transitivelyDependentCA
testCutoffFor dependentNonCA testCutoffFor dependentNonCA
testCutoffFor dependentFixedOutput
} }
testGC () { testGC () {