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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 2021
@Las:matrix.orgLas Well I imagine all packages depend on a specific major version 13:30:45
@Las:matrix.orgLasSince they are often incompatible with each other13:30:54
@maralorn:maralorn.demaralornThe question is: Where is the balance between hardcoding that for a certain package or doing it automatically for all packages.13:31:51
@maralorn:maralorn.demaralorn Generally doing that for all packages i.e. let them depend on aeson_1_5 and not on aeson would translate a lot of builderrors into eval errors. Also it would bloat nixpkgs by generating a lot of aliases. 13:35:27
@maralorn:maralorn.demaralornStill having a way to enable that for some packages would grant us a lot of flexibility …13:36:16
@maralorn:maralorn.demaralornBut not even sure if it would solve the haskell-gi problem.13:37:16
@cdepillabout:matrix.orgcdepillaboutThe Haskell team in Nixpkgs will helping people with hacking on Nix-related stuff at ZuriHac this year. The event is online and free, so we'd love to have everyone here participate if you're free: https://discourse.nixos.org/t/nix-and-haskell-at-zurihac-2021/1341714:14:27
@Las:matrix.orgLasIt's a shame that ZuriHac isn't also using Matrix14:36:57
@maralorn:maralorn.demaralorn Las: I have the fear that Matrix wouldn‘t be able to deliver the same voice/video-chat experience. 14:38:01
@Las:matrix.orgLas maralorn: I don't think that's a fear, that's a fact 14:40:16
@Las:matrix.orgLasVideo chat still isn't very well developed on Matrix14:40:28
@Las:matrix.orgLasFor 1-to-1 calls, it's very good though14:40:35
@Las:matrix.orgLasFor multiple people, screen sharing, etc. it's lacking14:40:43
@maralorn:maralorn.demaralornI haven‘t tried for quite a while.14:40:47
@maralorn:maralorn.demaralornOh, yeah. Screen sharing is probably a pain point.14:41:04
@Las:matrix.orgLasJitsi integration is used for it after all14:41:32
@Las:matrix.orgLasI remember reading on HN some comment by Arathorn about them going to do something about it14:42:01
@Las:matrix.orgLasBut that's probably a few months/years into the future14:42:17
@maralorn:maralorn.demaralornAnd when I think about how difficult zoom calls with a few dozens of people can be when they have different zoom versions. I am a bit afraid of client diversity in that point. "Please vote with thumbs up. We have 8 different guides in our wiki …"14:43:02
@sternenseemann:systemli.orgsterni (he/him)In light of ZuriHac I wrote up my thoughts on platform handling in hackage2nix: https://github.com/NixOS/cabal2nix/issues/497 I plan to get to this eventually, but maybe someone else is motivated to start to work on it14:54:12
@_xmpp_qy=40xa0.uk:matrix.orgbqv changed their display name from bqv to qy.14:56:12
@_xmpp_qy=40xa0.uk:matrix.orgbqv changed their display name from qy to bqv.14:56:14
@sternenseemann:systemli.orgsterni (he/him)While writing it up I also realized that my 4th point in the list which was semi-actionable would just disappear if we do the other things which is always good :)14:56:30
@maralorn:maralorn.demaralornI have to admit that I don‘t grasp all details and consequences of it. But it superficially it sounds like a reasonable next step.14:58:05
@sternenseemann:systemli.orgsterni (he/him)I'd be happy to clarify anything / reword the issue if anything is unclear14:59:25
@maralorn:maralorn.demaralornI just don‘t know what meta.badPlatforms is.15:00:16
@sternenseemann:systemli.orgsterni (he/him) maralorn: https://github.com/NixOS/nixpkgs/blob/1834bc871199fc6583cf270474aacbda9e5127f2/pkgs/stdenv/generic/check-meta.nix#L58-L60 15:17:13
@sternenseemann:systemli.orgsterni (he/him)basically if the platform you are trying to build a pkg for is either not in platforms or in badPlatforms it will create an unsupported system error15:17:45
@dschrempf:matrix.orgdschrempf joined the room.15:19:51
@sternenseemann:systemli.orgsterni (he/him)
In reply to @sternenseemann:systemli.org
Since builds are getting done now pretty quickly, I'm gonna wait for the darwin builds, then hopefully merge master again later today, hope that in the 1000 commits nothing triggers any major rebuilds and finish this cycle pretty quickly hopefully
Merged master, 261 builds to go, so looking good! Hopefully I can merge before I have to help moving this evening.
15:24:35

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