When running the installer on Windows, I wanted to put Python in an easily accessible path (C:\Python38 in my case), however, the GUI didn't seem to provide any way to change the path (from AppData). And additionally, the "install for all users" checkbox seemed to be broken (didn't respond to mouse events and remained checked). Running the installer with the argument TargetDir=C:\Python38 worked, but I wouldn't have expected to need to hack my way to just picking the install directory.