* gnu/packages/xdisorg.scm (startup-notification): New variable.
* gnu/packages/xdisorg.scm (xclip): New variable.
* gnu/packages/xorg.scm (xeyes, pixman, libdrm, libdrm-2.4.33, mtdev): Move to ... * gnu/packages/xdisorg.scm: New file. * gnu-system.am (GNU_SYSTEM_MODULES): Add it.