In the __init__.py, we have

__all__ = [DaemonContext]

But according to the documentation
https://docs.python.org/3/reference/simple_stmts.html?highlight=all#the-import-statement
“The public names defined by a module are determined by checking the module’s namespace for a variable named __all__; if defined, it must be a sequence of strings which are names defined or imported by that module.”

Indeed, star-import

from daemon import *

currently fails with error.

Therefore, we should rather have

__all__ = ["DaemonContext"]