| 3 Apr 2026 |
 Gaétan Lepage | * Neat project!
https://www.youtube.com/watch?v=AvK_gi_snJE
Some quotes from the conclusion:
-
"Nixpkgs CUDA aarch64 ecosystem is quite healthy"
Thanks to nix-community's 80 core ampere system
-
"Flakes make a good user interface"
This one is for you SomeoneSerge (matrix works sometimes)
-
"Lack of cached aarch64 CUDA builds"
👀💸
-
"Uneven freshness of packages"
Until we unlock core and maintainer cloning, that's going to be tough to change (especially reagrding how fast the whole space is moving).
-
"Community lacks GPU hardware"
Yes. And CPU too 😅
| 23:18:57 |
| Gaétan Lepage | * Neat project!
https://www.youtube.com/watch?v=AvK_gi_snJE
I find it really cool that someone wrote a convenient flake to make the DGX spark work OOTB.
Some quotes from the conclusion:
- "Nixpkgs CUDA aarch64 ecosystem is quite healthy"
Thanks to nix-community's 80 core ampere system
- "Flakes make a good user interface"
This one is for you SomeoneSerge (matrix works sometimes)
- "Lack of cached aarch64 CUDA builds"
👀💸
- "Uneven freshness of packages"
Until we unlock core and maintainer cloning, that's going to be tough to change (especially reagrding how fast the whole space is moving).
- "Community lacks GPU hardware"
Yes. And CPU too 😅
| 23:20:11 |
| 4 Apr 2026 |
 neobrain | It's working really nicely on mine too, but the lack of cache definitely hurts 😭 | 07:07:44 |
 connor (he/him) | Oh yikes a 1.0 release from the Helion team: https://github.com/pytorch/helion/releases/tag/v1.0.0 | 17:34:57 |
| 6 Apr 2026 |
| Gaétan Lepage | On it: https://github.com/NixOS/nixpkgs/pull/507373 | 20:57:31 |
|  Elliot Berman joined the room. | 21:51:37 |
| Gaétan Lepage | 🆕 transformer-engine added!
https://github.com/NixOS/nixpkgs/pull/473703
That was not a trivial one! | 23:42:59 |
| Gaétan Lepage | * 🆕 transformer-engine added!
https://github.com/NixOS/nixpkgs/pull/473703
That was not a trivial one! | 23:43:17 |
| Gaétan Lepage | * 🆕 transformer-engine added!
https://github.com/NixOS/nixpkgs/pull/473703
That was not a trivial one! Thanks to connor (burnt/out) (UTC-8) and @NickCao for the review. | 23:43:41 |
| 9 Apr 2026 |
| connor (he/him) | https://github.com/NixOS/nixpkgs/pull/507990 | 06:41:09 |
| connor (he/him) | | 06:42:04 |
| 10 Apr 2026 |
| Gaétan Lepage | Thanks a lot SomeoneSerge (matrix works sometimes), https://github.com/NixOS/nixpkgs/pull/500971 indeed fixed the issue! | 22:34:03 |
| 12 Apr 2026 |
|  kaya 𖤐 changed their profile picture. | 05:53:35 |
|  leona changed their profile picture. | 12:15:52 |
| 14 Apr 2026 |
 danielrf | connor (burnt/out) (UTC-8): TensorRT support in onnxruntime. It pretty much just works if you turn on support for it: https://github.com/NixOS/nixpkgs/pull/509976 | 13:40:27 |
| 15 Apr 2026 |
|  John D joined the room. | 22:22:58 |
| 16 Apr 2026 |
 ccicnce113424 | Redacted or Malformed Event | 01:14:52 |
| ccicnce113424 | * I'm using the latest version of nixos-unstable and noticed that Firefox isn't being cached. I checked your Hydra and found that the last successful evaluation for cuda-packages-unstable occurred on April 1; the most recent evaluation processes all ended prematurely. | 01:29:07 |
| ccicnce113424 | * I checked your Hydra and found that the last successful evaluation for cuda-packages-unstable occurred on April 1; the most recent evaluation processes all ended prematurely. | 01:29:34 |
 jaredmontoya | I tried to update to the latest nixos-unstable but thunderbird seems to not be in cache.nixos-cuda.org (and I can't build it because it sems to need more than 64GB RAM to build) did anyone else experience this? | 13:33:23 |
 hexa |
more than 64 GB
| 13:34:23 |
| hexa | that seems unlikely | 13:34:26 |
| hexa | https://hydra.nixos-cuda.org/jobset/nixos-cuda/cuda-packages-unstable#tabs-evaluations | 13:35:18 |
| hexa | the last eval was two weeks ago | 13:35:24 |
 Robbie Buxton | In reply to @hexa:lossy.network
that seems unlikely Idk I’ve oomed on packages with over 1TB of ram | 13:36:51 |
| hexa | wat\ | 13:37:01 |
| hexa | Redacted or Malformed Event | 13:37:03 |
 nim65s | but you build with how many cores? | 13:37:23 |
| hexa | a) you can run out of ram with exccessive cores | 13:37:29 |
| nim65s | * but you build with how many cores ? | 13:37:31 |
