I think this isn't a font technology specific problem but I think people here have definitely had this issue before.
I installed fontTools with pip and it's located in
It seems Fontlab and Glyphs App both expect it to be in
What's the correct way to fix this? Can one add some kind of link to /Library/Python/2.7/site-packages/ telling both apps that it's in the former location? Or should it be installed in /Library/Python/2.7/site-packages/ anyway (how?)