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NixOS CUDA

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CUDA packages maintenance and support in nixpkgs | https://github.com/orgs/NixOS/projects/27/ | https://nixos.org/manual/nixpkgs/unstable/#cuda58 Servers

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27 Aug 2025
@hexa:lossy.networkhexa * they're apparently pinning to a version with distutils exposed, we can just provide distutils 🤷 03:26:05
@apyh:matrix.orgapyhI'm doing all this because i really need a 2.9 nightly build but i get segfaults when doing multi-gpu NCCL stuff 😭07:35:38
@bot-wxt1221:matrix.orgBot_wxt1221 joined the room.08:45:43
@bot-wxt1221:matrix.orgBot_wxt1221Redacted or Malformed Event08:46:05
@glepage:matrix.orgGaƩtan Lepage

I'm having issues with updating torch to 2.8.0
https://github.com/NixOS/nixpkgs/pull/431973

ERROR Missing dependencies:
        setuptools<80.0,>=62.3.0

And I was not able to find any mentions of this constraint in the code base...

08:46:49
@bot-wxt1221:matrix.orgBot_wxt1221Could we build onnxruntime related packages?08:48:29
@glepage:matrix.orgGaƩtan LepageAre they currently broken?08:49:30
@glepage:matrix.orgGaƩtan Lepage I opened an update PR: https://github.com/NixOS/nixpkgs/pull/437307 08:49:40
@bot-wxt1221:matrix.orgBot_wxt1221No08:49:41
@bot-wxt1221:matrix.orgBot_wxt1221They are just mass cuda building08:49:51
@bot-wxt1221:matrix.orgBot_wxt1221like firefox and thunderbiar08:49:56
@bot-wxt1221:matrix.orgBot_wxt1221 * 08:50:00
@bot-wxt1221:matrix.orgBot_wxt1221 * 08:50:58
@bot-wxt1221:matrix.orgBot_wxt1221At least firefox could be considerd08:51:12
@bot-wxt1221:matrix.orgBot_wxt1221 * 08:51:15
@bot-wxt1221:matrix.orgBot_wxt1221Oh so is firefox with cudaSupport break now?08:52:06
@bot-wxt1221:matrix.orgBot_wxt1221ā“08:52:26
@glepage:matrix.orgGaƩtan LepageOh ok, you just have to wait for hydra to catch up. We can't do much more.08:52:29
@bot-wxt1221:matrix.orgBot_wxt1221Oh but firefox currently is not in the cuda hydra job08:55:59
@glepage:matrix.orgGaƩtan Lepage Is firefox affected by cudaSupport = true? I have it enabled on my system and never had to recompile firefox... 08:58:34
@bot-wxt1221:matrix.orgBot_wxt1221I believe it isn't before08:59:25
@bot-wxt1221:matrix.orgBot_wxt1221But it did on nixpkgs-unstable now08:59:35
@bot-wxt1221:matrix.orgBot_wxt1221on rev 18dd725c29603f582cf1900e0d25f9f1063dbf1108:59:51
@bot-wxt1221:matrix.orgBot_wxt1221It's because onnxruntime.09:00:02
@bot-wxt1221:matrix.orgBot_wxt1221I override onnxruntime with cudaSupport = false occlSupport = false;09:00:19
@bot-wxt1221:matrix.orgBot_wxt1221Then it could pull from cache.nixos.org09:00:28
@bot-wxt1221:matrix.orgBot_wxt1221But It compile if is without override09:00:39
@glepage:matrix.orgGaƩtan Lepage

Yes it's not (yet) on nixos-unstable:

nixpkgs on ī‚  nixos-unstable took 18s
ā® nom-build --arg config '{ allowUnfree = true; cudaSupport = true;}' -A firefox
Finished at 11:00:15 after 6s
/nix/store/c0g2fha7g7zbd3y74dm0rw1q8ghg89ya-firefox-142.0

nixpkgs on ī‚  nixos-unstable took 6s
āÆ nom-build --arg config '{ allowUnfree = true; cudaSupport = false;}' -A firefox
Finished at 11:00:24 after 5s
/nix/store/c0g2fha7g7zbd3y74dm0rw1q8ghg89ya-firefox-142.0
09:00:42
@bot-wxt1221:matrix.orgBot_wxt1221But on nixpkgs-unstable09:01:22
@glepage:matrix.orgGaƩtan Lepage Ok ok. That's not ideal I guess.
cc SomeoneSerge (Ever OOMed by Element)
09:01:54

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