 | Haskell in Nixpkgs/NixOS | 717 Members |
| For discussions and questions about Haskell with Nix, cabal2nix and haskellPackages in nixpkgs | Current Docs: https://haskell4nix.readthedocs.io/ | 143 Servers |
| Haskell in Nixpkgs/NixOS | 717 Members |
| For discussions and questions about Haskell with Nix, cabal2nix and haskellPackages in nixpkgs | Current Docs: https://haskell4nix.readthedocs.io/ | 143 Servers |
| Sender | Message | Time |
|---|---|---|
| 14 Aug 2025 | ||
 Artem | * but adding a package not from Stackage shouldn't overide anything, so this field isn't applicable, right? | 15:31:48 |
| Artem | * but adding a package not from Stackage shouldn't override anything, so this field isn't applicable, right? | 15:31:52 |
| Artem | do I need to run anything after updating configuration-hackage2nix/main.yml? the change doesn't seem to get picked up | 15:34:03 |
 maralorn | No, the field is applicable because hackage2nix always has a notion for the default. The default default is the newest version. | 15:37:06 |
 chreekat | Get it included in stackage? 🙂 | 15:37:20 |
| maralorn | Yes maintainers/scripts/haskell/regenerate-hackage-packages.nix | 15:38:01 |
| Artem | yes, I'm contemplating this now. There are some traces of it being there though: https://github.com/commercialhaskell/stackage/commit/c5e992f2a5eb9727c880e92be677d7ded665dc65 so, I guess it's just not the right LTS | 15:43:25 |
| Artem | chreekat: although I don't see it in any of the latest LTSs per GHC versions (I checked for GHC 9.10 and 9.8) | 15:45:30 |
| Artem | are you saying I should use "default-package-overrides" instead of "extra-packages" for a package outside of LTS? (I'm sorry for being slow!) | 15:46:38 |
| Artem | modulo the extension | 15:53:55 |
| Artem | I'll have to get back to this. In the meantime, I'm submit a PR unbreaking liquid-fixpoint at least: https://github.com/NixOS/nixpkgs/pull/433722 let me know if it's horribly formatted and against the guidelines... | 16:10:30 |
| chreekat | Looks like it's under "grandfathered dependencies", so probably needs a new champion . https://github.com/commercialhaskell/stackage/blob/master/build-constraints.yaml#L5657 | 16:10:43 |
 sterni (he/him) | Artem: may be https://github.com/NixOS/nixpkgs/issues/400784, try running with --fast | 16:34:07 |
| maralorn | Yes | 17:09:10 |
| maralorn | Ah, oops. | 17:09:24 |
| Artem | --fast did fix it | 19:41:32 |
| Artem | regenerate-hackage-packages.sh seems to reformat the whole hackage-packages.nix. Am I doing something wrong? | 19:53:28 |
| maralorn | Depends on the diff?^^ | 19:54:43 |
| maralorn | Possibly you have the wrong nixfmt in scope? Not sure. | 19:55:10 |
| maralorn | Yeah, nixfmt seems to be picked up from your environment. | 19:56:35 |
| maralorn | Easiest fix is probably loading loading the shell.nix. | 19:57:31 |
| Artem | maralorn: which shell.nix? | 20:01:55 |
| Artem | oh, maybe the root of nixpkgs, let me try it | 20:03:08 |
| Artem | that did the trick, thanks! | 20:14:24 |
| Artem | chreekat: what is "grandfathered depedndencies" exactly? MAINTAINERS.md doesn't explain (other than saying you move there packages that you no longer maintain) | 20:24:18 |
| 15 Aug 2025 | ||
| chreekat | I think it's unmaintained (from Stackage perspective) dependencies of actively maintained packages. At one time they were included implicitly, and at some point they were made explicit. I'm not confident about that, however. | 04:44:22 |
| Artem | makes sense, thank you | 05:22:59 |
| 18 Aug 2025 | ||
| Artem | how good is the Haskell builder with custom setups? I'm getting a pretty basic error when a custom setup uses a function from another package, and that package is listed in the cabal file's custom-setup:setup-depends, but when I'm building it with Nix, I'm getting "module not found" on the import-line in Setup.hs for an import from that other package. That's liquidhaskell, by the way. The import line is here: https://github.com/ucsd-progsys/liquidhaskell/blob/6baa675f6bb000d016f0c859d7f865263679dc43/Setup.hs#L3 and it comes from the liquidhaskell-boot package. I am building it on top of my branch from https://github.com/NixOS/nixpkgs/pull/433722: I just enabled liquidhaskell and liquidhaskell-boot on top of the packages that are enabled in that PR. This should be the entirety of the dependency tree of liquidhaskell... | 17:25:51 |
| Artem | * how good is the Haskell builder with custom setups? I'm getting a pretty basic error when a custom setup uses a function from another package, and that package is listed in the cabal file's custom-setup:setup-depends, but when I'm building it with Nix, I'm getting "module not found" on the import-line in Setup.hs for an import from that other package. That's liquidhaskell, by the way. The import line is here: https://github.com/ucsd-progsys/liquidhaskell/blob/6baa675f6bb000d016f0c859d7f865263679dc43/Setup.hs#L3 and it comes from the liquidhaskell-boot package. I am building it on top of my branch from https://github.com/NixOS/nixpkgs/pull/433722 (with nix-build -A haskellPackages.liquidhaskell): I just enabled liquidhaskell and liquidhaskell-boot on top of the packages that are enabled in that PR. This should be the entirety of the dependency tree of liquidhaskell... | 17:26:48 |
| Artem | * how good is the Haskell builder with custom setups? I'm getting a pretty basic error when a custom setup uses a function from another package, and that package is listed in the cabal file's custom-setup:setup-depends, but when I'm building it with Nix, I'm getting "module not found" on the import-line in Setup.hs for an import from that other package. That's liquidhaskell, by the way. The import line is here: https://github.com/ucsd-progsys/liquidhaskell/blob/6baa675f6bb000d016f0c859d7f865263679dc43/Setup.hs#L3 and it comes from the liquidhaskell-boot package. I am building it on top of my branch from https://github.com/NixOS/nixpkgs/pull/433722 (with nix-build -A haskellPackages.liquidhaskell): I just enabled liquidhaskell and liquidhaskell-boot on top of the packages that are enabled in that PR. This should be the entirety of the dependency tree of liquidhaskell... | 17:26:55 |