Use uuid4 to improve tempfile creation in parallel

setuptools/build_meta.py

@@ -34,6 +34,7 @@
 import tempfile
 import warnings
 from itertools import chain
+from uuid import uuid4
 
 import setuptools
 import distutils
@@ -100,9 +101,9 @@ def _patch_distutils_exec():
 
     def _exec(code, global_vars):
         try:
-            _, tmp = tempfile.mkstemp(suffix="setup.py")
-            with open(tmp, "wb") as f:
-                f.write(code)
+            f, tmp = tempfile.mkstemp(suffix=f"{uuid4()}-setup.py", text=False)
+            f.write(code)
+            f.close()  # Needed to re-open with tokenize
             with tokenize.open(tmp) as f:
                 code = f.read().replace(r'\r\n', r'\n')
         finally: