| 20 Aug 2025 |
 Pierre Thierry | I've looked at documentation and source code but I don't see how I can use developPackage and add additional packages to the environment (ideally they would only be added when using a shell). I guess that's done with the modifier attribute? | 18:02:08 |
| Pierre Thierry | (I'd like to add packages like HLS and hlint) | 18:02:32 |
 Artem | how do I get a sense of when the GHC 9.10 bump will be merged into staging? I saw a long list of failures but surely not everything has to be fixed before the merge. I also saw "We only do the merge if the mergeable job is succeeding on hydra" but how do I get a sense of close it is to succeeding? | 19:39:21 |
 maralorn | Artem: I am not sure anyone has it. We probably want to fix most of the errors here before merging: https://github.com/cdepillabout/nix-haskell-updates-status | 20:04:11 |
| maralorn | Last ghc bump took 4 to 5 months. But that was the worst one I can remember. We normally aim at one month and two are realistic. | 20:04:13 |
| 23 Aug 2025 |
 Magnus | In reply to @kephaspierre:matrix.org
I've looked at documentation and source code but I don't see how I can use developPackage and add additional packages to the environment (ideally they would only be added when using a shell). I guess that's done with the modifier attribute? This is how I do it. At least at the moment, things change as I learn more Nix.
https://gitlab.com/magus/nix-setups/-/tree/main/hs-shell?ref_type=heads | 15:34:30 |
 sterni (he/him) | Eval with Stackage LTS 24.6 https://hydra.nixos.org/eval/1817909?compare=1817896 | 22:01:32 |
| Pierre Thierry | In reply to @magthe:tchncs.de
This is how I do it. At least at the moment, things change as I learn more Nix.
https://gitlab.com/magus/nix-setups/-/tree/main/hs-shell?ref_type=heads I finally found a way where I wrote the least possible amount in my shell.nix, I do import project.nix (I run cabal2nix . > project.nix when my cabal file changes), and I use builtins.functionArgs to see every package I need, and use that in a pkgs.mkShell { packages = [ pkgs.hlint pkgs.haskell-language-server (pkgs.haskellPackages.ghcWithPackages getDeps)] | 23:26:40 |
| 24 Aug 2025 |
| sterni (he/him) | if you have the generated file you can just use haskell.packages.${your-pkg-set}.shellFor { packages = p: [ (p.callPackage ./project.nix { }) ]; nativeBuildInputs = [ /* other tools */ ]; }. | 14:10:00 |
 Uraraka ~ Ochaco | I no longer use nix for haskell packages, they're always out of date with hackage, so I just have my shell.nix including the correct ghc and cabal and then use cabal for the rest | 14:34:34 |
|  Magnolia Mayhem changed their profile picture. | 19:10:01 |
| Magnolia Mayhem changed their profile picture. | 23:20:56 |
| Magnolia Mayhem changed their profile picture. | 23:24:20 |
