def setup_namespace_pkg_compatibility(wheel_dir: str) -> None:
"""Converts native namespace packages and pkg_resource-style packages to pkgutil-style packages
Namespace packages can be created in one of three ways. They are detailed here:
https://packaging.python.org/guides/packaging-namespace-packages/#creating-a-namespace-package
'pkgutil-style namespace packages' (2) works in Bazel, but 'native namespace packages' (1) and
'pkg_resources-style namespace packages' (3) do not.
We ensure compatibility with Bazel of methods 1 and 3 by converting them into method 2.
Args:
wheel_dir: the directory of the wheel to convert
"""
namespace_pkg_dirs = namespace_pkgs.pkg_resources_style_namespace_packages(
wheel_dir
)
if not namespace_pkg_dirs and namespace_pkgs.native_namespace_packages_supported():
namespace_pkg_dirs = namespace_pkgs.implicit_namespace_packages(
wheel_dir, ignored_dirnames=["%s/bin" % wheel_dir,],
)
for ns_pkg_dir in namespace_pkg_dirs:
namespace_pkgs.add_pkgutil_style_namespace_pkg_init(ns_pkg_dir)
def test_empty_case(self):
directory = TempDir()
directory.add_file("foo/__init__.py")
directory.add_file("foo/bar/__init__.py")
directory.add_file("foo/bar/biz.py")
actual = namespace_pkgs.implicit_namespace_packages(directory.root())
self.assertEqual(actual, set())
def test_ignores_empty_directories(self):
directory = TempDir()
directory.add_file("foo/bar/biz.py")
directory.add_dir("foo/cat")
expected = {
directory.root() + "/foo",
directory.root() + "/foo/bar",
}
actual = namespace_pkgs.implicit_namespace_packages(directory.root())
self.assertEqual(actual, expected)
def test_finds_correct_namespace_packages(self):
directory = TempDir()
directory.add_file("foo/bar/biz.py")
directory.add_file("foo/bee/boo.py")
directory.add_file("foo/buu/__init__.py")
directory.add_file("foo/buu/bii.py")
expected = {
directory.root() + "/foo",
directory.root() + "/foo/bar",
directory.root() + "/foo/bee",
}
actual = namespace_pkgs.implicit_namespace_packages(directory.root())
self.assertEqual(actual, expected)