I'm "compiling" a program using PyInstaller using a .spec file. I'm using the .spec file because I need to include an extra file in the program. When I try to do PyInstaller --onefile Prog.spec, it still makes a folder in dist with all the files separate instead of making a single file as I'd expect. If I do PyInstaller --onefile Prog.py then it does make a single .exe file in dist, which is what I want. Is there something special I need to do when using a .spec file?