GH-49435: [CI][Python] Fix macOS protobuf@33 keg-only discovery#49491
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tadeja wants to merge 2 commits intoapache:mainfrom
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GH-49435: [CI][Python] Fix macOS protobuf@33 keg-only discovery#49491tadeja wants to merge 2 commits intoapache:mainfrom
tadeja wants to merge 2 commits intoapache:mainfrom
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tadeja
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AMD64 macOS 15-intel Python 3 and ARM64 macOS 14 Python 3 both successfully completed with the protobuf@33 change. Now attempting similar change for |
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@raulcd, @rok what do you say about this PR? it can be moved into existing draft #49436 if you'd prefer.
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Will users building for source need to use keg only? Should we update docs? |
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Mar 10, 2026
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| export PROTOBUF_PREFIX="$(brew --prefix protobuf@33)" | ||
| echo "PKG_CONFIG_PATH=${PROTOBUF_PREFIX}/lib/pkgconfig:${PKG_CONFIG_PATH}" >> "$GITHUB_ENV" | ||
| echo "CMAKE_PREFIX_PATH=${PROTOBUF_PREFIX}:${ARROW_HOME}:${CMAKE_PREFIX_PATH}" >> "$GITHUB_ENV" | ||
| echo "${PROTOBUF_PREFIX}/bin" >> "$GITHUB_PATH" |
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Perhaps this could be conditional to protobuf@33? Like here.
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+1
This is a workaround. We should remove @33 eventually after the gRPC problem is fixed.
See also:
- https://github.com/Homebrew/homebrew-core/blob/8b55249c502449f0c5a4c667d52af8eb7cd34010/Formula/g/grpc.rb#L37C30-L37C71
- grpc/grpc#41755
Could you add a comment when we can remove this workaround?
| export PROTOBUF_PREFIX="$(brew --prefix protobuf@33)" | ||
| echo "PKG_CONFIG_PATH=${PROTOBUF_PREFIX}/lib/pkgconfig:${PKG_CONFIG_PATH}" >> "$GITHUB_ENV" | ||
| echo "CMAKE_PREFIX_PATH=${PROTOBUF_PREFIX}:${ARROW_HOME}:${CMAKE_PREFIX_PATH}" >> "$GITHUB_ENV" | ||
| echo "${PROTOBUF_PREFIX}/bin" >> "$GITHUB_PATH" |
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Suggested change
| echo "${PROTOBUF_PREFIX}/bin" >> "$GITHUB_PATH" | |
| echo "${PROTOBUF_PREFIX}/bin" >> "$GITHUB_PATH" | |
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Rationale for this change
Homebrew upgrading protobuf beyond v33 (as described in #49435) also causes new runtime Bus error.
What changes are included in this PR?
a) Pin
protobuf@33incpp/Brewfile(as discussed in #49436)b) Add keg-only env setup in
python.ymlso CMake/pkg-config can findprotobuf@33This resolves
Fatal Python error: Bus erroron macOS 15 Intel when importingpyarrow.flight. Homebrew's latestprotobufpulls in Abseil 20260107-- Found abslAlt: 1 (found version "20260107")which is ABI-incompatible with Arrow's bundled gRPC v1.46.3
One of earliest Python CI logs with the
Bus error:https://github.com/apache/arrow/actions/runs/22722817262/job/65889451081#step:10:103
Note: Other workflows using
cpp/Brewfilewill prob need similar keg-only setup. (There's failing C++ job log here, Ruby etc.)Are these changes tested?
Yes, fork workflow completed the Python macOS 15-intel job with success.
Are there any user-facing changes?
No.