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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/#cuda57 Servers

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5 Dec 2025
@justbrowsing:matrix.orgKevin Mittman (UTC-8) So CUDA 13.1 released today
https://developer.download.nvidia.com/compute/cuda/redist/redistrib_13.1.0.json
03:34:00
@justbrowsing:matrix.orgKevin Mittman (UTC-8) Now includes a binary archive tarball for cuda_compat (not for Jetson Orin) "forward compatibility" 03:36:07
@glepage:matrix.orgGaétan Lepage Hi connor (burnt/out) (UTC-8)
What are you thoughts on https://github.com/NixOS/nixpkgs/pull/465751?
Not ideal as it does not solve the import issue for reverse dependencies, but at least it would allow me to move on with the vllm update.
21:42:43
6 Dec 2025
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)I think it’s fine15:38:45
@glepage:matrix.orgGaétan LepageThanks. Can you approve the PR please? I want to avoid "self-merging" it.22:57:54
7 Dec 2025
@glepage:matrix.orgGaétan Lepage

Thanks connor (burnt/out) (UTC-8)!

Actually, I was wondering whether the stubs could fix the import at build time...

11:11:53
@glepage:matrix.orgGaétan Lepage

Indeed (I'm quite dumb for not having made the link sooner) this issue is caused by https://github.com/NixOS/nixpkgs/pull/459416/commits/9d38d180dba19909a6058a4e16ffa1803536c4d8.

Is there a way I could disable this for this package?

11:50:49
@glepage:matrix.orgGaétan Lepage Opened https://github.com/NixOS/nixpkgs/pull/468659. I think it's way better than my previous solution. 14:24:33
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)Left a comment17:11:27
@glepage:matrix.orgGaétan LepageThanks a lot. Working on a better solution.17:26:06
8 Dec 2025
@adrian-gierakowski:matrix.orgadrian-gierakowskiis it expected for cudaSupport=true to cause nix itself to be rebuilt? https://github.com/NixOS/nixpkgs/issues/46894711:22:53
@adrian-gierakowski:matrix.orgadrian-gierakowskilooks like so tests related deps causing this 11:23:29
@adrian-gierakowski:matrix.orgadrian-gierakowski *

looks like so tests related deps causing this:

> nix why-depends /nix/store/rf0rkc1p07vgrc25b6br3f35aipipp3g-nix-2.32.4 /nix/store/awc75hb0iz3gnb4qbg3z1g9lk8jqiibi-hwloc-2.12.2-lib
/nix/store/rf0rkc1p07vgrc25b6br3f35aipipp3g-nix-2.32.4
└───/nix/store/i7chz8mn48rgmm1y8a6yy6gk6bs2dv8m-nix-2.32.4
    └───/nix/store/3pvks90shqql6bvb67cc88n21r7b3sx0-nix-util-2.32.4
        └───/nix/store/iq2bbr1l3ka2yfjc93gswsp43xr9a6mr-libblake3-1.8.2
            └───/nix/store/bk2q02fwz5mxa4xvblcl1p89ygllm04f-onetbb-2022.3.0
                └───/nix/store/awc75hb0iz3gnb4qbg3z1g9lk8jqiibi-hwloc-2.12.2-lib
11:26:18
@adrian-gierakowski:matrix.orgadrian-gierakowski Maybe I shouldn't set cudaSupport = true systemwide, but create a separate instance of pkgs for just those package which need cudaSupport? 12:51:02

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