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Haskell in Nixpkgs/NixOS

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For discussions and questions about Haskell with Nix, cabal2nix and haskellPackages in nixpkgs | Current Docs: https://haskell4nix.readthedocs.io/149 Servers

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28 Aug 2025
@emilazy:matrix.orgemily (which I think would look like: "if the default llvmPackages was bumped and we're on haskell-updates, then warn Haskell maintainers") 20:22:30
@maralorn:maralorn.demaralorn emily: Sadly, I have no clue and would have to research the supported versions llvm-ffi. Generally deactivating a warning that blocks you while pinging involved people seems fine. Possibly the person with the most bandwidth to think about this is wolfgangwalther who is not here but is already part of the conversation on github. 20:28:47
@emilazy:matrix.orgemily I talked about the warning with sterni in #staging:nixos.org recently :) 20:29:04
@emilazy:matrix.orgemilybut I don't recall what the concrete conclusion was20:29:09
@maralorn:maralorn.demaralornWell, I’ll take the opportunity and join that room now.20:30:46
@sternenseemann:systemli.orgsterni (he/him)llvm-ffi 21.0.0.2 should support LLVM 21 proper20:33:42
@emilazy:matrix.orgemily we don't have that on master, though 20:34:33
@sternenseemann:systemli.orgsterni (he/him)Either bump it manually until the upgrade trickles through via haskell-updates or remove the warning as long as the build doesn't break either should work.20:34:57
@emilazy:matrix.orgemilywe could cherry-pick it but it feels dubious for updating an LLVM off an rc to get blocked on this when we haven't even bumped the default version yet20:35:01
@sternenseemann:systemli.orgsterni (he/him)yes20:35:27
@sternenseemann:systemli.orgsterni (he/him)I wrote that code when LLVM default was a few versions back, seems like now where it's practically latest we could also sync it with the default version20:36:03
@sternenseemann:systemli.orgsterni (he/him)instead of latest available20:36:07
@Las:matrix.orgLas changed their profile picture.20:36:52
@emilazy:matrix.orgemilyright20:36:55

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