Right - good hygiene is key here. Make proper use of /usr/local and /opt to get stuff separated, and sit on your hands before you type when it comes to pip and

Right - good hygiene is key here. Make proper use of /usr/local and /opt to get stuff separated, and sit on your hands before you type when it comes to pip and the like. When I suspect problems I usually run a few `debsums` to make sure my installed files are still the originals from upstream.