llewton@potato:~$ dpkg --list libgl1-mesa-dri
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
ii  libgl1-mesa-dr 7.7.1-4        A free implementation of the OpenGL API -- D