" Project wide builtins let g:pyflakes_builtins += ["dynamic_property", "__", "P", "I"] python << EOFPY import os import vipy source_file = vipy.vipy.eval('expand("")') project_dir = os.path.dirname(source_file) src_dir = os.path.abspath(os.path.join(project_dir, 'src')) base_dir = os.path.join(src_dir, 'calibre') vipy.session.initialize(project_name='calibre', src_dir=src_dir, project_dir=project_dir, base_dir=base_dir) EOFPY