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turn 'derivation has incorrect deferred output' into warning

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this breaks nix develop when using a stable nix version

Update src/libstore/derivations.cc

Co-authored-by: John Ericson <git@JohnEricson.me>
This commit is contained in:
Jörg Thalheim 2025-12-08 18:20:36 +00:00 • committed by John Ericson
parent 907a5761fa
commit 623f3d321e
2 changed files with 20 additions and 9 deletions
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2
src/libstore-tests/derivation/invariants.cc
View file

@ -174,6 +174,7 @@ TEST_F(FillInOutputPathsTest, throwsOnIncorrectInputAddressedPath)
ASSERT_THROW(drv.fillInOutputPaths(*store), Error); ASSERT_THROW(drv.fillInOutputPaths(*store), Error);
} }
#if 0
TEST_F(FillInOutputPathsTest, throwsOnIncorrectEnvVar) TEST_F(FillInOutputPathsTest, throwsOnIncorrectEnvVar)
{ {
auto wrongPath = StorePath{"c015dhfh5l0lp6wxyvdn7bmwhbbr6hr9-wrong-name"}; auto wrongPath = StorePath{"c015dhfh5l0lp6wxyvdn7bmwhbbr6hr9-wrong-name"};
@ -195,6 +196,7 @@ TEST_F(FillInOutputPathsTest, throwsOnIncorrectEnvVar)
ASSERT_THROW(drv.fillInOutputPaths(*store), Error); ASSERT_THROW(drv.fillInOutputPaths(*store), Error);
} }
#endif
TEST_F(FillInOutputPathsTest, preservesDeferredWithInputDrvs) TEST_F(FillInOutputPathsTest, preservesDeferredWithInputDrvs)
{ {

27
src/libstore/derivations.cc
View file

@ -1230,7 +1230,7 @@ static void processDerivationOutputPaths(Store & store, auto && drv, std::string
std::optional<DrvHash> hashesModulo; std::optional<DrvHash> hashesModulo;
for (auto & [outputName, output] : drv.outputs) { for (auto & [outputName, output] : drv.outputs) {
auto envHasRightPath = [&](const StorePath & actual) { auto envHasRightPath = [&](const StorePath & actual, bool isDeferred = false) {
if constexpr (fillIn) { if constexpr (fillIn) {
auto j = drv.env.find(outputName); auto j = drv.env.find(outputName);
/* Fill in mode: fill in missing or empty environment /* Fill in mode: fill in missing or empty environment
@ -1248,12 +1248,20 @@ static void processDerivationOutputPaths(Store & store, auto && drv, std::string
"derivation has missing environment variable '%s', should be '%s' but is not present", "derivation has missing environment variable '%s', should be '%s' but is not present",
outputName, outputName,
store.printStorePath(actual)); store.printStorePath(actual));
if (j->second != store.printStorePath(actual)) if (j->second != store.printStorePath(actual)) {
throw Error( if (isDeferred)
"derivation has incorrect environment variable '%s', should be '%s' but is actually '%s'", warn(
outputName, "derivation has incorrect environment variable '%s', should be '%s' but is actually '%s'\nThis will be an error in future versions of Nix; compatibility of CA derivations will be broken.",
store.printStorePath(actual), outputName,
j->second); store.printStorePath(actual),
j->second);
else
throw Error(
"derivation has incorrect environment variable '%s', should be '%s' but is actually '%s'",
outputName,
store.printStorePath(actual),
j->second);
}
}; };
auto hash = [&]<typename Output>(const Output & outputVariant) { auto hash = [&]<typename Output>(const Output & outputVariant) {
if (!hashesModulo) { if (!hashesModulo) {
@ -1287,8 +1295,9 @@ static void processDerivationOutputPaths(Store & store, auto && drv, std::string
else else
/* Validation mode: deferred outputs /* Validation mode: deferred outputs
should have been filled in */ should have been filled in */
throw Error( warn(
"derivation has incorrect deferred output, should be '%s'", store.printStorePath(outPath)); "derivation has incorrect deferred output, should be '%s'.\nThis will be an error in future versions of Nix; compatibility of CA derivations will be broken.",
store.printStorePath(outPath));
} else { } else {
/* Will never happen, based on where /* Will never happen, based on where
`hash` is called. */ `hash` is called. */