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-rw-r--r--setuptools/package_index.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/setuptools/package_index.py b/setuptools/package_index.py
index 4b127f8c..14881d29 100644
--- a/setuptools/package_index.py
+++ b/setuptools/package_index.py
@@ -680,7 +680,7 @@ class PackageIndex(Environment):
# Make sure the file has been downloaded to the temp dir.
if os.path.dirname(filename) != tmpdir:
dst = os.path.join(tmpdir, basename)
- if not os.path.samefile(filename, dst):
+ if not (os.path.exists(dst) and os.path.samefile(filename, dst)):
shutil.copy2(filename, dst)
filename = dst