otf.py now explicitly imports the fontTools.cu2qu.errors module so that it is imported by pyinstaller. Using --hidden-import on the command line or in the spec file would also fix it, but doing this import means that the pyinstaller command remains minimal.
otf.py now explicitly imports the fontTools.cu2qu.errors module so that it is imported by pyinstaller. Using --hidden-import on the command line or in the spec file would also fix it, but doing this import means that the pyinstaller command remains minimal.