anchor.diff:        vaapiIntel
         vaapiVdpau
         libvdpau-va-gl
  -      unstable.intel-media-driver
  +      intel-media-driver
       ];
     };
     hardware.sane.enable = true;
  
positive.code: 
        desktopManager = {
          gnome3.enable = true;
          xterm.enable = false;
        };
        displayManager.gdm.enable = true;
      };
    };
  
  
negative.code:     enableExtensionPack = true;
      enableHardening = false; #needed for 3D acceleration
    };
  
  
    virtualisation.docker = {
      enable = true;
  