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Use a RewritingSink in derivation goal

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Possibly this will make it stream
This commit is contained in:
Théophane Hufschmitt 2023-03-17 15:51:08 +01:00
parent 3ebe1341ab
commit a917fb0d53
1 changed files with 9 additions and 6 deletions
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15
src/libstore/build/local-derivation-goal.cc
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@ -2384,13 +2384,16 @@ SingleDrvOutputs LocalDerivationGoal::registerOutputs()
if (!outputRewrites.empty()) {
debug("rewriting hashes in '%1%'; cross fingers", actualPath);
/* FIXME: this is in-memory. */
StringSink sink;
dumpPath(actualPath, sink);
/* FIXME: Is this actually streaming? */
auto source = sinkToSource([&](Sink & nextSink) {
RewritingSink rsink(outputRewrites, nextSink);
dumpPath(actualPath, rsink);
rsink.flush();
});
Path tmpPath = actualPath + ".tmp";
restorePath(tmpPath, *source);
deletePath(actualPath);
sink.s = rewriteStrings(sink.s, outputRewrites);
StringSource source(sink.s);
restorePath(actualPath, source);
movePath(tmpPath, actualPath);
/* FIXME: set proper permissions in restorePath() so
we don't have to do another traversal. */