NixOS/nixpkgs — pull request #3370 by geerds (2014-07-25 11:28:12+00:00)
Title: Fix trackpoint configuration on some systems

The path to configure trackpoint devices are not always the same:

* /sys/devices/platform/i8042/serio1/serio2 → with touchpad
* /sys/devices/platform/i8042/serio1 → without (or deactivated) touchpad
* /sys/devices/platform/i8042/serio4/serio5 → ThinkPad X100e, X121e, L520, E145