✖ nvcc main.cu 
gcc: No such file or directory

✖ nvcc main.cu 
gcc: No such file or directory

[pid 46094] execve("/nix/store/j09h8v4ldx0ix547gjp0p2asj0asssaw-glib-2.80.4-bin/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/run/wrappers/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/home/msanft/.nix-profile/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/nix/profile/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/home/msanft/.local/state/nix/profile/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/etc/profiles/per-user/msanft/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/nix/var/nix/profiles/default/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/run/current-system/sw/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)

In reply to @msanft:matrix.org
Also, does cudatoolkit miss a dependency on gcc, or am I mistaken by this error:

✖ nvcc main.cu 
gcc: No such file or directory

EDIT: No, it indeed seems to try and find GCC:

[pid 46094] execve("/nix/store/j09h8v4ldx0ix547gjp0p2asj0asssaw-glib-2.80.4-bin/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/run/wrappers/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/home/msanft/.nix-profile/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/nix/profile/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/home/msanft/.local/state/nix/profile/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/etc/profiles/per-user/msanft/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/nix/var/nix/profiles/default/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)
[pid 46094] execve("/run/current-system/sw/bin/gcc", ["gcc", "-E", "/tmp/tmpxft_0000b40d_00000000-2."...], 0x7ffe40c921b0 /* 97 vars */) = -1 ENOENT (No such file or directory)

In reply to @glepage:matrix.org
The topic is interesting. Imagine being able to have a massive decentralized build farm ! That would be amazing.
Of course this is far from possible today (mostly because of nix limitations).

In reply to @connorbaker:matrix.org
Oh! Unrelated but this was a cute change I made that I quite like: https://github.com/ConnorBaker/cuda-packages/blob/c81a6595f07456c6cc34d8976031c4fa972a741f/cudaPackages-common/backendStdenv.nix#L36
Sets some defaults for the CUDA stdenv and adds a name prefix, similar to what the Python packaging does, for more descriptive store paths

In reply to @ss:someonex.net
Btw at NixCon Tom brought up moving cudaSupport &al into the system which I think was raised here at least on a few occasions

In reply to @connorbaker:matrix.org
I’d really like capabilities to exposed as part of potential pkgsCross because they are effectively a platform target for the purposes of codegen; thoughts?

In reply to @connorbaker:matrix.org
Absolute biggest pain in my ass right now is packaging onnxruntime (https://github.com/ConnorBaker/cuda-packages/blob/main/cudaPackages-common/onnxruntime/package.nix).
For the ONNX and TensorRT ecosystem, I’m doing a cursed build where the CMake and Python builds are interlaced.
Turns out doing a straight CMake build gives different results compared to doing a Python build. Go figure, the multi-thousand line Python scripts invoked by setup.py change how stuff is configured.

Hi connor (he/him) (UTC-7) , first off, the Nix CUDA team is doing awesome work! I have spent the last week reading everything cuda related in nixpkgs and watching NixCon talks :) I am also trying to run onnxruntime with the tensorrt backend on a jetson device with NixOS. Really looking forward to how you might solve the puzzle there. I am new to Nix, therefore I hoped it would be simpler for me to patch the onnxruntime-gpu binaries provided by jetson zoo. My approach is:

• use poetry2nix to pull the specific wheel and run patchelf
• use an poetry2nix overlay to add the cuda packages from jetpack-nixos to the buildInputs of onnxruntime-gpu

Is this doable like this, do you recommend this? I find it amazing that torch from nixpkgs just works thanks to cuda_compat. Can the cuda_compat trick work here too? Thanks a lot for your time!