Agree with javispedro. Any extras-devel app is there for testing and bugreports and should be used as such. Be sure to check any extras-devel app carefully before and after install. I even suggest rebooting after installing an extras-devel app because it might have just trashed your system into reboot-loop.

You can du -s /usr/share/* | sort -n

(and /usr/lib/*) to see what is taking up space on your root fs.