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this post was submitted on 07 Jul 2025
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Nix / NixOS
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Yeah this happened a while ago, it's been in stable since 25.05 i think. Nixgl isn't really a good solution for me though, but luckily i recently found another option of populating the /run directory with the nix drivers, the same way nixos does it. This seems to solve all the issues i had and makes nix on non-nixos much more powerfull to me. Since i can install game launchers and entire compositors with it, and programs that require the native system drivers will still be able to work inside of that nix-installed compositor. I'm thinking of switching back to void now and i'm working on a non-nix home manager setup.
Can you share your setup? I'd really like that because I don't think nixgl works with GPPU apps like CUDA or lc0 (chess engine that uses gpu).
EDIT:
Is this it: https://github.com/juipeltje/configs/blob/54e971f6a6da47d6cfd02a6409be97d5e1051b0f/scripts/cron/nix-drivers.sh ?
Although this seems like it would just symlink opengl? What if I wanted GGPU like OpenCL or CUDA?
Edit2: wait, I think I might be misunderstanding how it works. I think nixgl already supports opencl, because it's mesa that implements opencl and opengl. But how would I get mesa support? I don't think the symlink to /run trick works.
Sorry for keeping you hanging, i actually got the idea from here you can ignore the nixgl stuff because that wouldn't be needed anymore, but the important part is building a derivation with those drivers in it, and then symlink those folders to /run. It should work with rocm/cuda as well but i haven't troed that yet. I've done some basic testing in a vm while i'm working on the config and so far for opengl stuff it has been working fine.