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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/140 Servers

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30 Sep 2025
@mangoiv.:matrix.orgMangoIV I’ll be happy to help 15:59:52
@maralorn:maralorn.demaralornOr are you interested in both of them independently?^^16:00:15
@mangoiv.:matrix.orgMangoIV Jup if ghc 9.14 releases we’ll probably get an estimate from them right 16:00:21
@mangoiv.:matrix.orgMangoIV Independently 16:00:28
@mangoiv.:matrix.orgMangoIV :P 16:00:32
@mangoiv.:matrix.orgMangoIV HLS 2.12 will probably be easier right 16:00:39
@maralorn:maralorn.demaralornOkay16:00:39
@maralorn:maralorn.demaralornYes16:00:49
@maralorn:maralorn.demaralornMost hls updates need next to no intervention actually, now that I think about it. The annoying thing is mainly to keep HLS building while upgrading stackage because that breaks the aforementioned manually fixed build plans.16:02:30
@mangoiv.:matrix.orgMangoIVWhy do you not distribute HLS bindists btw?16:04:42
@mangoiv.:matrix.orgMangoIV Wouldn’t that be much easier 16:04:48
@mangoiv.:matrix.orgMangoIV I am already careful to split the package set for tooling from the one for development anyway 16:06:20
@mangoiv.:matrix.orgMangoIV There’s no reason for me to share them 16:06:27
@mangoiv.:matrix.orgMangoIV Nobody actually uses hls as a library 16:06:37
@mangoiv.:matrix.orgMangoIV I guess it’s a fun exercise to package it but it seems like so much work to do it for 500 compilers-pckset permutations a year 16:07:19
@maralorn:maralorn.demaralornI don’t think there is a viable bindist.16:07:46
@mangoiv.:matrix.orgMangoIV Aha makes sense. 16:07:58
@mangoiv.:matrix.orgMangoIV What does Ghcup do 16:08:01
@maralorn:maralorn.demaralornIt does not work on nixos.16:08:12
@mangoiv.:matrix.orgMangoIV Fwiw even a FOD would be good 16:08:30
@mangoiv.:matrix.orgMangoIV I do know that. I wonder where they get their binary from. 16:08:46
@maralorn:maralorn.demaralornBut roughly: There is a bindist of hls for every bindist of ghc.16:08:51
@maralorn:maralorn.demaralornhls ci builds them.16:09:00
@mangoiv.:matrix.orgMangoIV I see. 16:09:14
@mangoiv.:matrix.orgMangoIV (Fwiw same applies for GHC bindist) 16:09:50
@mangoiv.:matrix.orgMangoIV A FOD would be good 16:10:04
@maralorn:maralorn.demaralornI mean, we somehow use ghc bindists in nixpkgs, right?^^16:10:38
@maralorn:maralorn.demaralornI don’t even know what our derivations for that do differently from ghcup. 😄16:10:55
@maralorn:maralorn.demaralornA fod of what?16:11:12
@teoc:matrix.orgTeo (he/him)I was just reading the binary GHC bindist code. There's a bit of complexity there, but it's mostly just using patchelf to provide the C deps16:12:36

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