setuptools/dist: Fix reproducibility issue by sorting globbing

globbing uses os.listdir() which returns order on disk which is unsorted.
Ultimately this leads to random ordering of License-File entries in PKG-INFO
and means the resulting output isn't deterministic.

Adding a sort fixes that. Switch to glob instead ot iglob since sorted()
removes the benefit of an iterator.

#2691

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

setuptools/dist.py

@@ -15,7 +15,7 @@
 from distutils.util import strtobool
 from distutils.debug import DEBUG
 from distutils.fancy_getopt import translate_longopt
-from glob import iglob
+from glob import glob
 import itertools
 import textwrap
 from typing import List, Optional, TYPE_CHECKING
@@ -603,7 +603,7 @@ def _expand_patterns(patterns):
         return (
             path
             for pattern in patterns
-            for path in iglob(pattern)
+            for path in sorted(glob(pattern))
             if not path.endswith('~')
             and os.path.isfile(path)
         )