Hi,

 

With latest version of pip, it now forces to build wheel for every package, which causes incompatibilities (due to use of data_files and copying into not standard path) . I've attempted to add --binary=:all: --no-binary mypackage to the pip command, but it did not help. Only solution I found is to break bdist_wheel command in the setup.py, but it adds error messages during installation which can be improperly interpreted by end users.