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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/#cuda60 Servers

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6 Oct 2025
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)I guess if you don’t mind re-evaluating everything there’s no need for evalStore since we could use an in-memory dummy store (probably wouldn’t need tmpfs build directory then either18:44:47
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8) * 18:44:52
@ss:someonex.netSomeoneSerge (matrix works sometimes)Well the real issue here is that lol why physical realizations of aterm drvs in the first place19:44:03
7 Oct 2025
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)Using toJSON calls addToStore on paths before serializing so they’re valid; I guess I could try using unsafeDiscardWhatever before serializing to JSON to see if that’s enough to prevent realization01:32:05
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8) There was a --read-only flag I had forgotten about 03:47:47
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)

Okay, it's way faster now and doesn't need a ramdisk.
Where as previously it would take about 1m40s on my i9-13900k now it's taking about 20s to do

time nix build -L ".#reports.x86_64-linux.pkgs-cuda-post^*" --builders '' --rebuild
03:53:40

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