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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/ | More Nix: #community:nixos.org | More Haskell: #haskell-space:matrix.org149 Servers

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2 Jun 2025
@teoc:matrix.orgTeo (he/him)The other thing is GHC supports using a different linker to what it was built with, but I'm not sure if it's worthwhile making use of that. You'd have to split it into a bindist derivation and an installed GHC derivation. It would save building GHC n times though12:21:31
@sternenseemann:systemli.orgsterni (he/him) emily: it's probably better to use lld over ld.gold longterm, but we'd have to check first how bad ld.bfd is nowadays 12:43:43
@sternenseemann:systemli.orgsterni (he/him)I wonder if GHC's configure script still rejects ld.bfdโ€ฆ12:44:12
@teoc:matrix.orgTeo (he/him)I'd be keen to just make it an opt-in thing for now, and then at some point in the future we can make it the default if we want12:49:44
@alex:tunstall.xyzAlex
In reply to @emilazy:matrix.org
OTOH both ld.gold and ld.bfd sort of suck for Linux to be on so maybe someone should make LLD happen system-wide :P
I've found mold to be even better than lld.
But it doesn't (didn't?) support the weird things GHC does. :(
18:24:42
@alexfmpe:matrix.orgalexfmpewth is going on with git-annex20:28:53
@alexfmpe:matrix.orgalexfmpeevery lts bump invalides its hash20:29:01
@maralorn:maralorn.demaralornWell, thatโ€™s on purpose. peti left an excellent comment there. ๐Ÿ˜„20:32:36
@maralorn:maralorn.demaralorn

The Hackage tarball is purposefully broken, because it's not intended to be, like, useful.

20:33:06
@maralorn:maralorn.demaralornMakes me smile everytime I read it. ๐Ÿ˜„20:33:15
@alexfmpe:matrix.orgalexfmpecan we, like, shame upstream into doing something different?20:54:44
@sternenseemann:systemli.orgsterni (he/him)hm did wolfgang talk to anyone before the warnIf change?21:28:42
@sternenseemann:systemli.orgsterni (he/him)the PR is pretty much what I wanted to do myself, but it's a pretty self merge in any case21:29:05
@sternenseemann:systemli.orgsterni (he/him)maybe he has telepathic abilities :)21:29:13
@maralorn:maralorn.demaralornI know of nothing. ๐Ÿ˜„21:41:40

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