Backport #186 from py-py to fix macOS failures (#26653)

Backports the relevant bits of https://github.com/pytest-dev/py/commit/0f77b6e66f79c07dbb657e2b4a7e94263eacc01b

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/spack/external/py/_path/local.py b/lib/spack/external/py/_path/local.py
index 2ffdaddf06..d2f16b993e 100644
--- a/lib/spack/external/py/_path/local.py
+++ b/lib/spack/external/py/_path/local.py
@@ -10,7 +10,7 @@ from py._path import common
 from py._path.common import iswin32, fspath
 from stat import S_ISLNK, S_ISDIR, S_ISREG
 
-from os.path import abspath, normcase, normpath, isabs, exists, isdir, isfile, islink, dirname
+from os.path import abspath, normpath, isabs, exists, isdir, isfile, islink, dirname
 
 if sys.version_info > (3,0):
     def map_as_list(func, iter):
@@ -801,10 +801,10 @@ class LocalPath(FSBase):
         if rootdir is None:
             rootdir = cls.get_temproot()
 
-        nprefix = normcase(prefix)
+        nprefix = prefix.lower()
         def parse_num(path):
             """ parse the number out of a path (if it matches the prefix) """
-            nbasename = normcase(path.basename)
+            nbasename = path.basename.lower()
             if nbasename.startswith(nprefix):
                 try:
                     return int(nbasename[len(nprefix):])