Would you consider including a pype.desktop file with your source distribution? When installed under Linux in the correct distribution-specific place, (e.g., /usr/share/applications) this file will cause pype to appear on the menus in both the KDE and Gnome desktops. I have noted that you test pype on both KDE and Gnome-based Linux distributions.
Another Arch Linux user has created the attached file for your consideration. I use neither KDE nor Gnome, so I don't have a convenient way to test this functionality.