We already delete unused Qt modules, but we weren't deleting their PyQt5 modules.
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taken from Electron-Cash/Electron-Cash@e044c94677160b6e6bb1a981b22a4b85103de6cb
Importing from PyQt5.Qt is an unnecessary fallback that loads every PyQt5 module.
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taken from Electron-Cash/Electron-Cash@d69471b31d1f25a703588f48ee0cc5afdf1f1f2f
pkg2appimage excludes libusb-1.0.so by default for no good reason:
83483c2971/excludelist (L112)
This can cause an issue when the AppImage loads the systems libusb but the
systems libusb in turn loads libudev from the AppImage. The kernel ABI for
libusb will not be changing so it is safe to bundle it into the AppImage.
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taken from Electron-Cash/Electron-Cash@25d45fdcbfa335d83de876ff16e978a058d17e22
SomberNight
Axel Gembe