fix CI failure due to #pypa/pip/issues/7778

Signed-off-by: Bernat Gabor <bgabor8@bloomberg.net>

setup.py

@@ -5,5 +5,8 @@
 
 setup(
     use_scm_version={"write_to": "src/virtualenv/version.py", "write_to_template": '__version__ = "{version}"'},
-    setup_requires=["setuptools_scm >= 2"],
+    setup_requires=[
+        # this cannot be enabled until https://github.com/pypa/pip/issues/7778 is addressed
+        # "setuptools_scm >= 2"
+    ],
 )

tests/unit/create/test_creator.py

@@ -133,7 +133,9 @@ def test_create_no_seed(python, creator, isolated, system, coverage_env, special
         # pypy cleans up file descriptors periodically so our (many) subprocess calls impact file descriptor limits
         # force a cleanup of these on system where the limit is low-ish (e.g. MacOS 256)
         gc.collect()
-    patch_files = {result.creator.purelib / "{}.{}".format("_distutils_patch_virtualenv", i) for i in ("py", "pth")}
+    purelib = result.creator.purelib
+    patch_files = {purelib / "{}.{}".format("_distutils_patch_virtualenv", i) for i in ("py", "pyc", "pth")}
+    patch_files.add(purelib / "__pycache__")
     content = set(result.creator.purelib.iterdir()) - patch_files
     assert not content, "\n".join(ensure_text(str(i)) for i in content)
     assert result.creator.env_name == ensure_text(dest.name)

tests/unit/seed/test_boostrap_link_via_app_data.py

@@ -93,7 +93,9 @@ def test_base_bootstrap_link_via_app_data(tmp_path, coverage_env, current_fastes
     assert not process.returncode
     # pip is greedy here, removing all packages removes the site-package too
     if site_package.exists():
-        patch_files = {result.creator.purelib / "{}.{}".format("_distutils_patch_virtualenv", i) for i in ("py", "pth")}
+        purelib = result.creator.purelib
+        patch_files = {purelib / "{}.{}".format("_distutils_patch_virtualenv", i) for i in ("py", "pyc", "pth")}
+        patch_files.add(purelib / "__pycache__")
         post_run = set(site_package.iterdir()) - patch_files
         assert not post_run, "\n".join(str(i) for i in post_run)