Yeah:

    xserver = {
      enable = true;
      xkb.layout = "us";
      videoDrivers = [
        "amdgpu"
        "radeonsi"
      ];
      displayManager.startx = {
        enable = true;
      };
      desktopManager = {
        xterm.enable = false;
      };
      windowManager.bspwm.enable = true;
    };

K900: any concern about these excerpts?

  hardware.graphics = {
    enable = true;
    enable32Bit = true;
    extraPackages = with pkgs; [
      rocmPackages.clr.icd
      rocmPackages.clr
      rocmPackages.rocminfo
      rocmPackages.rocm-runtime
    ];
  };

  boot.initrd.availableKernelModules = [
    "nvme"
    "xhci_pci"
    "ahci"
    "usbhid"
    "usb_storage"
    "sd_mod"
  ];
  boot.initrd.kernelModules = [ "amdgpu" ];
  boot.kernelModules = [ "radeonsi" ];