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NOTE: the PR should probably not be merged as-is. It requires some thought before it is ready. I just opened the PR to open the discussion. |
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This sounds reasonable to me. I think it would also make sense to eventually just deprecate our module and suggest users use that dedicated package |
carbolymer
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Both digest and crc32c are importing crc32c_extend symbol which results in GHC linker fatal error when both dependencies are in the dependency tree. There is a PR open in digest which goes in the direction of removing crc32c C library: TeofilC/digest#24 in favour of using crc32c haskell library directly.
carbolymer
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Both digest and crc32c are importing crc32c_extend symbol which results in GHC linker fatal error when both dependencies are in the dependency tree. There is a PR open in digest which goes in the direction of removing crc32c C library: TeofilC/digest#24 in favour of using crc32c haskell library directly.
carbolymer
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Nov 3, 2025
Both digest and crc32c are importing crc32c_extend symbol which results in GHC linker fatal error when both dependencies are in the dependency tree. There is a PR open in digest which goes in the direction of removing crc32c C library: TeofilC/digest#24 in favour of using crc32c haskell library directly.
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When cross-compiling to Windows
ouroboros-consensususing Haskell.nix, we encountered the following error:The veredict is that both
crc32canddigest(on which we depend via different dependencies) compile C sources for libcrc32c, and they both expose the same symbols. In a normal Windows build this is not a problem, but it is a problem for the cross-compilation.digesthas a git submodule with Google's crc32c, andcrc32cinstead has a local vendored version of the source code.A possible alternative would be to create a package that prepares the C sources for both
crc32canddigest. In the same spirit as https://hackage.haskell.org/package/zlib-clib.I'm opening this PR as a way to start the discussion on how to best solve this. Unfortunately
digestexposed quite some cabal flags which do not exist incrc32c, so I don't really know how to best proceed.