| 7 May 2025 |
 maralorn | So maybe its not going to be as bad as I am fearing. | 11:37:22 |
 chreekat | https://github.com/commercialhaskell/stackage/issues/7743 is the Stackage coordination point | 11:39:18 |
| chreekat | I count 48 packages dropped, and Jens said at least 18 of them are direct dependents of text | 11:41:54 |
| chreekat | Luckily it was "just" nightly, so snapshots continue to be released. Just with fewer packages | 11:42:34 |
 Teo (he/him) | Thanks! We have a draft PR to run head.hackage against stackage snapshosts somewhere. I want to tidy that up and merge that at some point. And then we could run that before a every release and have a better understanding of these things | 11:44:34 |
| Teo (he/him) | Btw I'll be at Zurihac this year and I'd be keen to have a chat about how we can improve GHC/head.hackage processes to make things like this less painful in the future | 11:49:33 |
 sterni (he/him) | i would guess more than 1/10; IIRC it is something like install: could not create file …: no such file or directory. Happens on Hydra, so you probably need a reasonable high -j (is marked big-parallel) and a busy machine | 11:52:58 |
| maralorn | I’ll be there, too. Let’s do that! | 12:33:02 |
| chreekat | I'm also in! | 12:53:01 |
 hellwolf | nice, I will be there too :) | 13:54:00 |
|  Brendon A Kay joined the room. | 15:00:46 |
|  Ethan joined the room. | 16:02:37 |
| maralorn | Does hydra kill jobs which need to much memory? | 21:15:38 |
| maralorn | Because the build I am currently trying is roughly at 100G RAM right now, so even if it succeeds, which seems unlikely, it doesn’t seem like a viable solution. 😄 | 21:16:51 |
 Alex | The kernel can if the overall system is low on memory (OoM killer). | 21:40:09 |
| Alex | I don't know if Hydra specifically is designed to limit memory usage. I don't recall such an option being very prominent in the configuration section of the Hydra manual. | 21:41:01 |
 Alyssa Ross | In reply to @maralorn:maralorn.de
Because the build I am currently trying is roughly at 100G RAM right now, so even if it succeeds, which seems unlikely, it doesn’t seem like a viable solution. 😄 that's same ballpark as linking firefox so it might be fine if it's tagged as big-parallel | 21:42:24 |
 alexfmpe | That....not.....what | 21:46:05 |
| Alex | That sounds like more of a bfd ld thing than a Firefox thing.
For the morbidly curious: try building Firefox with mold? | 21:49:15 |
| Alyssa Ross | It's built with LLD | 21:52:40 |
| Alyssa Ross | I think it's mostly because of the debug symbols | 21:52:42 |
| 8 May 2025 |
|  @industrial:matrix.org left the room. | 20:31:15 |
| 9 May 2025 |
| Ethan | Hey everyone, new-ish nix user here. I work with a decent amount of haskell code and I'm trying to get it setup but see a lot of contradictory recommendations online. I'm currently working in a repo with a bunch of stack projects in different directories. The way I previously would have done this is just entered each one and run stack build. Do I have to give each of them a derivation now? Or is there an easier way to do this? | 21:02:18 |
| maralorn | This depends a lot on what your goal is. Generally the rule with our setup is: 1 package (cabal or stack) -> 1 derivation. Although that doesn't have to be tedious because you can easily autogenerate them. | 21:13:03 |
| maralorn | With the exception of haskell.nix all "contradictory recommendations" mostly only differ in different more or less helpful abstraction layers to manage the derivations generate with cabal2nix. I don't think it matters much which to use but I understand that it's all a bit overwhelming. | 21:16:12 |
| maralorn | Generally I would recommend against pulling in significant nix dependencies other than nixpkgs. Flakes or not is really a matter of taste and quite orthogonal to the rest. | 21:24:32 |
| maralorn | But feel free to ask more concrete questions. | 21:24:55 |
| Ethan | I'm curious how you autogenerate them? | 21:27:27 |
| Ethan | Also is stack really used with nix? It seems that nix replaces its functionality. | 21:28:24 |
| Alex | In reply to @bodzioney:matrix.org
I'm curious how you autogenerate them? Usually with cabal2nix. There is callCabal2nix in Nixpkgs for a very convenient way of using it. | 21:34:45 |
