nixos/nvidia: load `nvidia-uvm` kernel module via `softdep` (#267335)

        ];

        boot = {

          blacklistedKernelModules = ["nouveau" "nvidiafb"];

          kernelModules = [ "nvidia-uvm" ];

          # Don't add `nvidia-uvm` to `kernelModules`, because we want

          # `nvidia-uvm` be loaded only after `udev` rules for `nvidia` kernel

          # module are applied.

          #

          # Instead, we use `softdep` to lazily load `nvidia-uvm` kernel module

          # after `nvidia` kernel module is loaded and `udev` rules are applied.

          extraModprobeConfig = ''

            softdep nvidia post: nvidia-uvm

          '';

        };

        systemd.tmpfiles.rules =

          lib.optional config.virtualisation.docker.enableNvidia