[WIP] Attempt to fix problem with cygwin

setuptools/config/expand.py

@@ -23,7 +23,6 @@
 from glob import iglob
 from itertools import chain
 from configparser import ConfigParser
-from pathlib import Path
 
 from distutils.errors import DistutilsOptionError
 
@@ -243,29 +242,22 @@ def find_packages(*, namespaces=False, root_dir=None, **kwargs):
     where = kwargs.pop('where', ['.'])
     if isinstance(where, str):
         where = [where]
-    target = [_nest_url_style_path(root_dir, path) for path in where]
+    target = [_nest_path(root_dir, path) for path in where]
     from distutils import log
     log.warn(f"find_packages cwd={os.getcwd()!r} root_dir={root_dir!r}")
     for p in target:
         log.warn(f"find_packages where={p!r} {kwargs!r}")
     return list(chain_iter(PackageFinder.find(x, **kwargs) for x in target))
 
 
-def _nest_url_style_path(parent, path):
+def _nest_path(parent, path):
     from distutils import log
 
-    log.warn(f"_nest_url_style_path parent={parent!r} path={path!r}")
+    log.warn(f"_nest_path parent={parent!r} path={path!r}"
+             f" norm={os.path.normpath(path)!r}")
 
     path = parent if path == "." else os.path.join(parent, path)
-    return _url_style_path(path)
-
-
-def _url_style_path(path):
-    from distutils import log
-
-    parts = Path(os.path.normpath(path)).parts
-    log.warn(f"_url_style_path parts={parts!r}")
-    return "/".join(parts) or "."
+    return os.path.normpath(path)
 
 
 def version(value):