[calibre4evar]

Originally Posted by kovidgoyal

Just use the official calibre binary from http://calibre-ebook.com/download_linux, then you dont have to worry about your distro's inability to keep up.

The requirements on the download page are only for source building? Won't there be weird crashes if I install the binaries (via linux-installer.py) on a system that has older libs (e.g. pyqt = 5.2.1)?

In any case I added the required lines to ./src/calibre/gui2/viewer/keys.py for the time being -- easiest backport ever!!! Except nothing happens when I press ctrl-T. It even allows me to redefine the shortcut, e.g. to F9, and still nothing happens.