| 8 Feb 2026 |
 Teo (he/him) | Yeah I used it here for getting cabal files but using nix and casa for packages seems trickier cause the hashing is different(?) https://github.com/cdepillabout/stacklock2nix/commit/3b6eee1ccb533a588be12666ea14e5e05bfe0183 | 15:18:54 |
| 9 Feb 2026 |
 chreekat |
Unfortunately since switching to CAS, stack no longer tells us the
revision of cabal files in lock files.
Fwiw I think this restriction could be lifted in stack. You can have redundant info in the pantry file format, unless I'm mistaken
| 13:19:03 |
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| 13 Feb 2026 |
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| chreekat | as a sanity check, if a tool was introduced that created a drv for every source file of every haskell dependency of your haskell package, that would be unreasonable, right? Way too many drvs? | 15:04:19 |
 maralorn | Not necessarily. Probably? Eval times might be horrendous. But I wouldn't bet on that. The question is usually what this drvs do and for many usecases, like e.g. compiling the overhead per drv makes it very slow. | 15:09:47 |
| chreekat | interestin | 15:11:09 |
| chreekat | * interesting | 15:11:12 |
| chreekat | context is that i'm experimenting with using casa as a source for package sources. Right now, the tool fetches tree manifests and blobs from casa and assembles them into a package source tree that can be built in a later step | 15:12:04 |
| chreekat | using IFD it's unusable, but the goal is to try using dynamic derivations / rfc92 | 15:12:38 |
| chreekat | (pre-generation would be another option) | 15:13:27 |
| maralorn | I have optimised our work CI by making on hlint/ormulo check derivation per file. Without caching it is a bit slower but once the store is populated the speedup is significant. | 15:14:01 |
| maralorn | * | 15:14:28 |
 toonn | chreekat: Isn't that what haskell.nix does? | 15:16:18 |
| chreekat | it doesn't use casa as far as I know. | 15:21:33 |
| toonn | No, re drv per Cabal component. Though that's not exactly what you said, I suppose. | 15:22:20 |
