| 16 Apr 2026 |
 Robbie Buxton | The large instances have interesting ratios | 13:40:55 |
 hexa | yeah, but if you get 10k cores at the same time, then what? | 13:41:09 |
| Robbie Buxton | Iirc it’s not that smart for sizing (the service itself is fab tho) | 13:41:32 |
| hexa | that's 160 MB per core if I didn't miscalculate | 13:41:38 |
| Robbie Buxton | In reply to @hexa:lossy.network
yeah, but if you get 10k cores at the same time, then what? On a single machine I can dream | 13:41:47 |
| hexa | right | 13:41:55 |
 Gaétan Lepage | Yes, our cuda-packages jobset is broken because python3Packages.deep-ep emits a warning at eval time. | 13:56:06 |
| Gaétan Lepage | If someone may review https://github.com/NixOS/nixpkgs/pull/510375, we could start building again | 13:56:23 |
| Gaétan Lepage | Sorry everyone for the disruption | 13:56:35 |
 SomeoneSerge (matrix works sometimes) | A reminder that the cache is not an officially maintained cuda team thing at the moment, and only exposed as an accidental dev artifact. Reminder that "stable channels" are not an official cuda team thing. Only hydra itself is. For the time being. | 14:00:03 |
| 17 Apr 2026 |
| Gaétan Lepage | SomeoneSerge (matrix works sometimes) do you think we can get this in today?
https://github.com/NixOS/nixpkgs/pull/498612#issuecomment-4266520526
It's be nice to have it as part as 26.05 and the window closes by tomorrow | 09:31:18 |
| SomeoneSerge (matrix works sometimes) | These changes are backportable | 12:59:28 |
| SomeoneSerge (matrix works sometimes) | * | 12:59:47 |
| Gaétan Lepage | Sure, but it'd be easier to merge them now (if they're ready ofc)c | 13:11:32 |
| Gaétan Lepage | * Sure, but it'd be easier to merge them now (if they're ready ofc) | 13:11:34 |
| 18 Apr 2026 |
 ccicnce113424 | Actually, the window doesn't close until 2026-04-27 07:00 UTC, so we've still got a few days, not "tomorrow". That said, I think this PR is ready to merge right now. | 09:03:52 |
| 20 Apr 2026 |
 Edward Tjörnhammar | You risk breaking HPC deployments with these changes | 09:05:45 |
| Edward Tjörnhammar | * You risk breaking HPC deployments with these changes, rushing them without further confirmations is reckless | 09:07:42 |
| Edward Tjörnhammar | * You risk breaking HPC deployments with these changes, rushing them without further confirmations is reckless | 09:08:01 |
| ccicnce113424 | @[Edward Tjörnhammar] I'm not rushing anything. I didn't touch the HPC-specific logic, and the PR is literally open for review. I've already replied to all your concerns in the PR comments. If you genuinely believe HPC is broken by these changes, please quote the exact lines of code on GitHub that cause the issue. Let's keep the discussion technical and factual. | 09:40:13 |
| ccicnce113424 | https://github.com/NixOS/nixpkgs/pull/498612#issuecomment-4279399845 | 09:43:58 |
| ccicnce113424 | * @[Edward Tjörnhammar] I'm NOT rushing anything. I didn't touch the HPC-specific logic, and the PR is literally open for review. I've already replied to all your concerns in the PR comments. If you genuinely believe HPC is broken by these changes, please quote the exact lines of code on GitHub that cause the issue. Let's keep the discussion technical and factual. | 09:58:20 |
| Edward Tjörnhammar | In reply to @ccicnce113424:matrix.org
@[Edward Tjörnhammar] I'm NOT rushing anything. I didn't touch the HPC-specific logic, and the PR is literally open for review. I've already replied to all your concerns in the PR comments. If you genuinely believe HPC is broken by these changes, please quote the exact lines of code on GitHub that cause the issue. Let's keep the discussion technical and factual. That would be great, I said you risk breaking HPC deployments not that it was a fact, the concerns in my review are my technical and factual concerns. That you adressed my concerns were my main priority since you seemed to want to get this in within the merge window. I will take another look tonight. | 10:38:07 |
|  Moraxyc joined the room. | 12:36:07 |
|  caniko changed their profile picture. | 14:19:45 |
| 21 Apr 2026 |
| Gaétan Lepage | Hi Samuel Ainsworth!
I'm having yet another hash mismatch on xla:
error: hash mismatch in fixed-output derivation '/nix/store/r97i94lw0gyqi8x1z7w0f65v8p8hwlyr-xla-0-unstable-2026-02-21-deps.tar.drv':
specified: sha256-QTUqcP5t91Z4s+esxxFz2tGJAJplWXWZuYPqcC7ld+E=
got: sha256-go2EUhzSI2LcvYTjkrj3nbbwiLSusuj2Ijh6rlcarqE=
| 20:51:35 |
| 22 Apr 2026 |
 Samuel Ainsworth | Hmm interesting could you send me your deps file again and I can debug? | 00:06:40 |
| Gaétan Lepage | Sure:
https://mega.nz/file/PpZDzZqT#oGHHBpawgcbkqtk49FlVv1tL3Nvd4-FhEXZfulvxtfc | 07:11:35 |
| 23 Apr 2026 |
|  @little_dude:matrix.org left the room. | 09:36:06 |
| Gaétan Lepage | connor (burnt/out) (UTC-8), do you know if libnvvm is a CUDA>=13.0 thing? Or should it also be packaged for 12.9. | 16:18:41 |
