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Merge pull request #13402 from DavHau/build-cores

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build-cores: detect cores automatically if set to 0
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Sergei Zimmerman 2025-07-09 23:06:55 +03:00 • committed by GitHub
commit b19e9acc03
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8 changed files with 58 additions and 10 deletions
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src/libstore/unix/build/derivation-builder.cc
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@ -1083,7 +1083,7 @@ void DerivationBuilderImpl::initEnv()
env["NIX_STORE"] = store.storeDir;
/* The maximum number of cores to utilize for parallel building. */
env["NIX_BUILD_CORES"] = fmt("%d", settings.buildCores);
env["NIX_BUILD_CORES"] = fmt("%d", settings.buildCores ? settings.buildCores : settings.getDefaultCores());
/* In non-structured mode, set all bindings either directory in the
environment or via a file, as specified by