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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/#cuda59 Servers

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3 Apr 2026
@glepage:matrix.orgGaétan Lepage

Interesting, I'm facing another error:

error:
       … while setting up the build environment

       error: getting attributes of path '/nix/store/02wkfkv635277dyq176lw5dcqpxlpsl0-kmod-31/sbin/bin': No such file or directory
15:56:06
@justbrowsing:matrix.orgKevin Mittman (UTC-7)
In reply to @connorbaker:matrix.org
Also, can someone explain https://developer.download.nvidia.com/compute/cuda/redist/cuda_compat_orin/ to me? If I had to hazard a guess, it would be that it would allow using CUDA 13.1/13.2 on a Jetson based on JetPack 7 (since support for Orin is added in JetPack 7.2, but that hasn't been released yet as far as I can tell, though it is talked about in the CUDA 13.2 blog post: https://developer.nvidia.com/blog/cuda-13-2-introduces-enhanced-cuda-tile-support-and-new-python-features/#embedded_devices). Is that correct? Or does it allow forward compat across major versions and can be used with JetPack 6, similar to how cuda_compat for Orins on JetPack 5 allows support for up to CUDA 12.2 despite shipping with CUDA 11.4.
I don't deal with Jetpack but the general idea is it allows using a newer CUDA Toolkit, than the driver in the BSP would otherwise support - that mapping is a bit fuzzy though.
17:46:54
@justbrowsing:matrix.orgKevin Mittman (UTC-7)
In reply to @connorbaker:matrix.org
Also, can someone explain https://developer.download.nvidia.com/compute/cuda/redist/cuda_compat_orin/ to me? If I had to hazard a guess, it would be that it would allow using CUDA 13.1/13.2 on a Jetson based on JetPack 7 (since support for Orin is added in JetPack 7.2, but that hasn't been released yet as far as I can tell, though it is talked about in the CUDA 13.2 blog post: https://developer.nvidia.com/blog/cuda-13-2-introduces-enhanced-cuda-tile-support-and-new-python-features/#embedded_devices). Is that correct? Or does it allow forward compat across major versions and can be used with JetPack 6, similar to how cuda_compat for Orins on JetPack 5 allows support for up to CUDA 12.2 despite shipping with CUDA 11.4.
This one is specific to Jetson Orin, the other cuda_compat provides forward compatibility for x86_64 server, arm64 server, Jetson Thor, etc
17:48:59
@justbrowsing:matrix.orgKevin Mittman (UTC-7) changed their display name from Kevin Mittman (jetlagged/UTC-7) to Kevin Mittman (UTC-7).17:50:31
@neobrain:matrix.orgneobrain joined the room.18:31:27
@glepage:matrix.orgGaétan Lepage

Neat project!
https://www.youtube.com/watch?v=AvK_gi_snJE

Some quotes from the conclusions:

"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 😅

23:11:35
@glepage:matrix.orgGaétan 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 😅

23:12:17
@glepage:matrix.orgGaétan 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 😅

23:16:51
@glepage:matrix.orgGaétan 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 😅

23:17:20
@glepage:matrix.orgGaétan 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 😅

23:17:45
@glepage:matrix.orgGaétan 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
@glepage:matrix.orgGaétan 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:matrix.orgneobrainIt's working really nicely on mine too, but the lack of cache definitely hurts 😭07:07:44
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)Oh yikes a 1.0 release from the Helion team: https://github.com/pytorch/helion/releases/tag/v1.0.017:34:57

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