bazel: use bash with fallback $PATH consisting of basic shell utils #266847
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Second iteration of this change. First attempt did not ensure `bashWithDefaultShellUtils` is available at runtime.
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Result of 28 packages marked as broken and skipped:
173 packages built:
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bjornfor
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Nov 12, 2023
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https://hydra.nixos.org/build/240805256/nixlog/1 https://hydra.nixos.org/build/240805170/nixlog/2 Failure is a bit obscured but long story short, a script within bazel gets custom nixpkgs shebang which in turn makes shell run in POSIX-compatible mode. Bazel expects bash in non-POSIX mode and osx-specific script starts to fail due to `set -e` and subshell interaction differences in those modes (sub-shells and functions suddently start inheriting `set -e` and fail to produce desired output). More debug info is available in NixOS#267670 Shell scripts aren't guaranteed to work as interpreters in shebang. In particular thin shell wrappers aren't shebang-ready on MacOS. It may work sometimes depending on what exactly would try to execute a script with such shebang, but generally it's not guaranteed to work. See NixOS#124556 Bash wrapper was introduced in NixOS#266847 and so far seems like the issue only affects darwin builds: hydra failure is in osx-specific script, also shebang issue is usually darwin-specific. Let's wrap it as a native binary to make it shebang-compatible. The wrapper is only currently added to `bazel_6` so no need for changes in other versions. ZHF: NixOS#265948
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github-actions bot
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Dec 7, 2023
https://hydra.nixos.org/build/240805256/nixlog/1 https://hydra.nixos.org/build/240805170/nixlog/2 Failure is a bit obscured but long story short, a script within bazel gets custom nixpkgs shebang which in turn makes shell run in POSIX-compatible mode. Bazel expects bash in non-POSIX mode and osx-specific script starts to fail due to `set -e` and subshell interaction differences in those modes (sub-shells and functions suddently start inheriting `set -e` and fail to produce desired output). More debug info is available in #267670 Shell scripts aren't guaranteed to work as interpreters in shebang. In particular thin shell wrappers aren't shebang-ready on MacOS. It may work sometimes depending on what exactly would try to execute a script with such shebang, but generally it's not guaranteed to work. See #124556 Bash wrapper was introduced in #266847 and so far seems like the issue only affects darwin builds: hydra failure is in osx-specific script, also shebang issue is usually darwin-specific. Let's wrap it as a native binary to make it shebang-compatible. The wrapper is only currently added to `bazel_6` so no need for changes in other versions. ZHF: #265948 (cherry picked from commit 7377bba)
bjornfor
pushed a commit
that referenced
this pull request
Dec 7, 2023
https://hydra.nixos.org/build/240805256/nixlog/1 https://hydra.nixos.org/build/240805170/nixlog/2 Failure is a bit obscured but long story short, a script within bazel gets custom nixpkgs shebang which in turn makes shell run in POSIX-compatible mode. Bazel expects bash in non-POSIX mode and osx-specific script starts to fail due to `set -e` and subshell interaction differences in those modes (sub-shells and functions suddently start inheriting `set -e` and fail to produce desired output). More debug info is available in #267670 Shell scripts aren't guaranteed to work as interpreters in shebang. In particular thin shell wrappers aren't shebang-ready on MacOS. It may work sometimes depending on what exactly would try to execute a script with such shebang, but generally it's not guaranteed to work. See #124556 Bash wrapper was introduced in #266847 and so far seems like the issue only affects darwin builds: hydra failure is in osx-specific script, also shebang issue is usually darwin-specific. Let's wrap it as a native binary to make it shebang-compatible. The wrapper is only currently added to `bazel_6` so no need for changes in other versions. ZHF: #265948 (cherry picked from commit 7377bba)
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Description of changes
Fixes #265040. Ensure any shell action has a minimal set of tools available (even for remote builds).
This is the second attempt at implementing this. The first attempt (#265041) did not ensure the bash wrapper
bashWithDefaultShellUtilsis available at runtime.Please also let me know if this should target staging instead of master.
Things done
nix.conf? (See Nix manual)sandbox = relaxedsandbox = truenix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage./result/bin/)