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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://nixos.org/manual/nixpkgs/unstable/#haskell | Current PR: https://github.com/nixos/nixpkgs/pulls?q=is%3Apr+is%3Aopen+head%3Ahaskell-updates | Maintainer Docs: https://github.com/NixOS/nixpkgs/blob/haskell-updates/pkgs/development/haskell-modules/HACKING.md | More Nix: #community:nixos.org | More Haskell: #haskell-space:matrix.org | Merger Schedule: https://cloud.maralorn.de/apps/calendar/p/H6migHmKX7xHoTFa/dayGridMonth/now | Join #haskell.nix:libera.chat for question about the alternative haskell.nix infrastructure141 Servers

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5 Nov 2025
@gnumuskox:matrix.orgSupermuskox left the room.09:10:40
@gnumuskox:matrix.orgSupermuskox joined the room.09:37:13
@sternenseemann:systemli.orgsterniwhat version of GHC?10:06:54
@sternenseemann:systemli.orgsterni I think for 9.4 this works, but in general it is not to be expected. You need to coax the rts linker into loading a shared archive which it doesn't necessarily like because it's tricky. dlopen of course only works for shared objects which is the normal way 10:08:33
@sternenseemann:systemli.orgsterni(Haskell static archives/object files is not a problem, but arbitrary ones)10:08:56
@b:chreekat.netchreekat Ghc/Cabal is confusing af on this point. I'm spectating right now as people in #GHC:matrix.org try to figure out some forms of static linking 10:56:00
@sternenseemann:systemli.orgsternii mean this is not that great a mystery, only dynamic libs are designed so that they can be dynamically loaded at run time (instead of link time)12:05:15
@sternenseemann:systemli.orgsterniso you would not in general expect your repl to br able to do this12:05:34
@b:chreekat.netchreekatWell it's obvious now that you've said it 😄12:15:35
@keypusher:matrix.orgkeypusherRedacted or Malformed Event14:12:49
6 Nov 2025
@denbrahe:matrix.org@denbrahe:matrix.org left the room.15:24:22
7 Nov 2025
@mangoiv.:matrix.orgMangoIV has anybody here thought about enabling -finfo-table-map in nixpkgs? 15:29:15
@maralorn:maralorn.demaralornYes16:20:44

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