Recommended way of installing RPD on Fedora?

Thanks for letting me know. I’ve added the fix to the install script.

If the program fails to launch on your instance of Fedora 29 with the message that PyQT5 sip cannot be found (or words to that effect), then run this (without sudo):

pip3 install --user --upgrade PyQt5 PyQt5_sip

This latter issue will be fixed in 0.9.14.