nix: Add --print-build-logs flag #2810
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This causes 'nix' to print build log output to stderr rather than showing the last log line in the progress bar. Log lines are prefixed by the name of the derivation (minus the version string), e.g. binutils> make[1]: Leaving directory '/build/binutils-2.31.1' binutils-wrapper> unpacking sources binutils-wrapper> patching sources ... binutils-wrapper> Using dynamic linker: '/nix/store/kr51dlsj9v5cr4n8700jliyz8v5b2q7q-bootstrap-stage0-glibc/lib/ld-linux-x86-64.so.2' bootstrap-stage2-gcc-wrapper> unpacking sources ... linux-headers> unpacking sources linux-headers> unpacking source archive /nix/store/8javli69jhj3bkql2c35gsj5vl91p382-linux-4.19.16.tar.xz
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This option is super handy! Though it took me a while to find that it exists. Is it intentional that it's undocumented? |
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@PetarKirov It's documented on the top level |
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@brendanzab Thanks for the info! I didn't consider checking the help for the top-level |
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This causes
nixto print build log output to stderr rather than showing the last log line in the progress bar. Log lines are prefixed by the name of the derivation (minus the version string), e.g.#1904
https://github.com/tweag/nix/issues/87