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Parallel builds don't work: Cabal (library) bug on configure? #84

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snoyberg opened this issue May 27, 2015 · 7 comments
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Parallel builds don't work: Cabal (library) bug on configure? #84

snoyberg opened this issue May 27, 2015 · 7 comments
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P3: Optional

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@snoyberg
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When I have parallel builds on, the runhaskell Setup.hs build steps will sporadically fail about "need to configure", but if I set the number of Shake flags to 1, it works. We may want to conditionally set threads to 1 on Windows for an initial release, and then debug what's happening.
@snoyberg snoyberg self-assigned this May 27, 2015
@snoyberg snoyberg added this to the Initial release milestone May 27, 2015
snoyberg added a commit that referenced this issue May 27, 2015
@snoyberg
Use 1 thread on Windows #84
943ccf9
@snoyberg
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Initial hack done, deferring to later milestone.

@snoyberg
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This now appears to be occurring on Linux as well

snoyberg added a commit that referenced this issue May 28, 2015
@snoyberg
Do one configure at a time #84
b511d70
@snoyberg
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I suspect that this is a bug in the Cabal library. However, b511d70 introduces a resilient workaround. I'm going to move this to a later milestone for now, but may end up closing it completely.

@snoyberg snoyberg modified the milestones: Later improvements, Initial release May 28, 2015
@snoyberg snoyberg removed their assignment May 28, 2015
snoyberg added a commit that referenced this issue May 28, 2015
@snoyberg
Allow parallel builds on Windows #84
2322c55
@snoyberg
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The workaround is working reliably, and is documented as a hack in the codebase. Closing the issue, we can always research further in the future if desired.

@chrisdone
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So something to do with configuring indeed has a global dependency. Good to know...

@snoyberg
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I bet if we crawled through the cabal-install code base long enough we'd find that they'd implemented the same hack somewhere.

@mpilgrem
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mpilgrem commented Dec 5, 2023

It seems that, after eight years, something may have happened somewhere to cure the original problem that the workaround fixed. See #6361.

@mpilgrem mpilgrem changed the title Parallel builds don't seem to work on Windows Parallel builds don't work: Cabal (library) bug on configure? Dec 5, 2023
@chenrui333 chenrui333 mentioned this issue Feb 14, 2024
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