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Fix the remote build of CA derivations

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Make sure that the derivation we send to the remote builder is exactly
the one that we want to build locally so that the output ids are exactly
the same

Fix #4845
This commit is contained in:
regnat 2021-06-21 14:16:13 +02:00
parent e6150de90d
commit 498677cbed
1 changed files with 10 additions and 1 deletions
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11
src/build-remote/build-remote.cc
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@ -277,7 +277,16 @@ connected:
auto drv = store->readDerivation(*drvPath);
auto outputHashes = staticOutputHashes(*store, drv);
drv.inputSrcs = store->parseStorePathSet(inputs);
// Hijack the inputs paths of the derivation to include all the paths
// that come from the `inputDrvs` set.
// We don’t do that for the derivations whose `inputDrvs` is empty
// because
// 1. It’s not needed
// 2. Changing the `inputSrcs` set changes the associated output ids,
// which break CA derivations
if (!drv.inputDrvs.empty())
drv.inputSrcs = store->parseStorePathSet(inputs);
auto result = sshStore->buildDerivation(*drvPath, drv);