Yeah, I’m not sure how up-to-date my knowledge is, but opengl and the like are exceptions to the usual deterministic handling of dependencies on non-NixOS distros (not because it is unable to do so, I think it is mainly to avoid storing everything n-times with nvidia/amd), and one has to specify them. It was quite a time I ran nix on a non-nixos distro but there is this tool https://github.com/guibou/nixGL that meant to solve the issue of graphical programs.