disp.nix

 services.xserver = {
    enable = true;
    layout = "us";
    libinput.enable = true;
    displayManager.sddm.enable = true;
    displayManager.sessionCommands = ''
      ${pkgs.xorg.xrdb}/bin/xrdb -merge <<EOF
        xterm*faceName: Hack
        xterm*faceSize: 13
        ! This is the Dark Pastels colorscheme from KDE Konsole
        xterm*background: rgb:1c/1c/1c
        xterm*foreground: rgb:dc/dc/cc
        xterm*color0: rgb:3f/3f/3f
        xterm*color1: rgb:70/50/50
        xterm*color2: rgb:60/b4/8a
        xterm*color3: rgb:df/af/8f
        xterm*color4: rgb:9a/b8/d7
        xterm*color5: rgb:dc/8c/c3
        xterm*color6: rgb:8c/d0/d3
        xterm*color7: rgb:dc/dc/cc
      EOF
      dropbox &
      xscreensaver -no-splash &
    '';
    }