From 3f172826492e99470db75a74cdaa5494ec3e932c Mon Sep 17 00:00:00 2001
From: Anderson Bravalheri <andersonbravalheri@gmail.com>
Date: Thu, 27 Apr 2023 16:30:41 +0100
Subject: [PATCH] Attempt to use a valid PEP 440 version fallback

---
 setuptools/version.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/setuptools/version.py b/setuptools/version.py
index 75b2a14959..ec253c4144 100644
--- a/setuptools/version.py
+++ b/setuptools/version.py
@@ -1,6 +1,6 @@
 from ._importlib import metadata
 
 try:
-    __version__ = metadata.version('setuptools')
+    __version__ = metadata.version('setuptools') or '0.dev0+unknown'
 except Exception:
-    __version__ = 'unknown'
+    __version__ = '0.dev0+unknown'