i found these instructions for removing. sudo apt-get install ppa-purge sudo ppa-purge ppa:mutlaqja/ppa I have nightly in my apt repository and i get "unable to locate package Indi-full" and gsc. sudo apt-add-repository ppa:mutlaqja/indinightly sudo apt-get update sudo apt-get install indi-full kstars-bleeding gscRead More...