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NixOS CUDA

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8 Jan 2026
@glepage:matrix.orgGaétan Lepage

RE onnxruntime-dependent segfaults when cudaSupport is enabled.

Apparently, this does not only happen in onnxscript, but also in rapidocr-onnxruntime.

10:12:03
@glepage:matrix.orgGaétan Lepage Addressed in https://github.com/NixOS/nixpkgs/pull/478028. 10:46:28
@glepage:matrix.orgGaétan Lepage connor (burnt/out) (UTC-8) what is your plan for updating the default cudaPackages alias?
Bumping to 12.9 or directly to 13?
11:02:00
@glepage:matrix.orgGaétan Lepage I ask this because evaluating nixpkgs with cudaSupport = true is currently broken because of python3Packages.paddlepaddle which doesn't have sources for Cuda 12.8. 12:39:45
@glepage:matrix.orgGaétan Lepage And this broke our cuda-packages-unstable hydra jobset :/ 12:40:29
@wilhelmines:matrix.orgwilhelmines joined the room.16:58:46
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)Is that backport-able?17:19:30
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)I’d be okay bumping to the latest CUDA once we get OpenCV bumped to the latest release (4.13 came out recently and includes fixes to build with CUDA 13), assuming nothing super important breaks17:20:53
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)One of the longer discussions I keep pushing back is deciding on whether or not we want to do release gating, and if so, which packages should be considered blockers.17:21:32
@ss:someonex.netSomeoneSerge (back on matrix)Yes we should, at the least on pytorch19:52:18
@ss:someonex.netSomeoneSerge (back on matrix)Eval error like that is a bug. if you have the time, append "or null" to the attribute look up19:56:31

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