After unpacking the Gridsync AppImage with the --appimage-extract flag, I noticed that the resultant squashfs-root directory contains multiple copies of some libraries -- probably as a result of PyInstaller's "onedir" mode copying them in the root directory while linuxdeploy insists that they be placed in AppDir/usr/lib. Because the duplicate libraries increase the size of the AppImage file significantly, they should be removed if possible (and the deduplicated/smaller AppImage should be tested for any regressions resulting from this).