Nvidia Fails to build

I usually have the latest zfs-compatible Kernel and this work pretty well with the NVIDIA driver (I’m running 23.05).

From my config:

let
   # use latest kernel, but keep ZFS compatibility, actual version is at most:
   # nix eval nixos#legacyPackages.x86_64-linux.zfs.latestCompatibleLinuxPackages.kernel.version
     myKernelVersion = pkgs:
     let
       zfs_version = pkgs.zfs.latestCompatibleLinuxPackages.kernel.version;
       latest_kernel_version = pkgs.linuxPackages_latest.kernel.version;
       preferred_version =
         if pkgs.lib.versionAtLeast zfs_version latest_kernel_version
         then pkgs.linuxPackages_latest
         else pkgs.zfs.latestCompatibleLinuxPackages;
       enforce_version = {version ? preferred_version}: version;
     in
       # or whatever NVIDIA compiles with
       enforce_version { }; # enforce_version { version = pkgs.linuxPackages_6_0; };
in
   boot.kernelPackages = myKernelVersion pkgs;
   hardware.nvidia.package = (myKernelVersion pkgs_unfree).nvidiaPackages.legacy_470;
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