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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/143 Servers

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29 May 2021
@maralorn:maralorn.demaralorn joe (he/him): So I really hope it’s something you did. 13:14:20
@maralorn:maralorn.demaralornWhich ghc version is it building?13:14:57
@joe:monoid.aljoe (he/him)err, whichever is built by 8.6.5-binary13:15:14
@sternenseemann:systemli.orgsterni (he/him) joe (he/him): which GHC? 13:15:20
@joe:monoid.aljoe (he/him)I think however that I might have actually been using a very old nixpkgs13:15:24
@sternenseemann:systemli.orgsterni (he/him)and which platform13:15:26
@joe:monoid.aljoe (he/him)perhaps it was GCd on hydra13:15:35
@sternenseemann:systemli.orgsterni (he/him)maybe you have an overlay?13:15:53
@maralorn:maralorn.demaralornThere is no GC on hydra.13:15:55
@maralorn:maralorn.demaralorn8.6.5 sounds like you are building 8.8.4? Should be cached.13:16:32
@joe:monoid.aljoe (he/him)specifically: /nix/store/q8qprh8ynbbmh0dgpz4ds82yz21ij8j8-ghc-8.10.4.drv13:16:53
@joe:monoid.aljoe (he/him)I'll investigate, I don't think I have any overlay which could be causing this.13:17:08
@sternenseemann:systemli.orgsterni (he/him)884 and 8104 are cached13:17:20
@joe:monoid.aljoe (he/him)hmmm, this is the one required for my system by pandoc13:18:22
@maralorn:maralorn.demaralornSounds concerning.13:19:07
@matthewcroughan:defenestrate.itmatthewcroughan joined the room.15:51:48
@matthewcroughan:defenestrate.itmatthewcroughanHeyo. I wanna learn Haskell. Just wondering, can it run on microcontrollers like the ESP32?15:53:32
@pennae:matrix.eno.spacepennaenot really15:58:04
@roosemberth:orbstheorem.chRoosOh, that would certainly be fun15:53:47
@pennae:matrix.eno.spacepennaeghc only targets x86 and arm/aarch64 atm15:58:38
@roosemberth:orbstheorem.chRoosI think the writer of git-annex has something along those lines.15:54:07
@pennae:matrix.eno.spacepennae(other haskell compilers do exist, but afawk they mostly do bytecode or jvm, so they're out from the start for a µC)16:01:39
@roosemberth:orbstheorem.chRoosRight: https://hackage.haskell.org/package/arduino-copilot15:55:54
@roosemberth:orbstheorem.chRoos
In reply to @roosemberth:orbstheorem.ch
Right: https://hackage.haskell.org/package/arduino-copilot
Or C
16:02:19
@maralorn:maralorn.demaralornAnd I thought javascript runs on anything these days …16:08:20
@roosemberth:orbstheorem.chRoosThat's not necessarily a good thing xD16:08:50
@Las:matrix.orgLas cabal build on aarch64 for me gives me an ghc: could not execute: opt error, even though I have it in my PATH. Does anyone know how to fix this? 16:10:45
@maralorn:maralorn.demaralorn Las: On nixos-unstable? 16:13:25
@Las:matrix.orgLasYeah16:13:31
@Las:matrix.orgLasIt's from the 7th of May16:14:02

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