gh-104527: zippapp will now avoid appending an archive to itself. (gh-106076)

zippapp will now avoid appending an archive to itself.

diff --git a/Lib/zipapp.py b/Lib/zipapp.py
index d8ebfcb6c73b0c7bdec4c69a446d30e310526492..03a214efa10a20dcf1a54b611a0b83abb79b4265 100644 (file)
--- a/Lib/zipapp.py
+++ b/Lib/zipapp.py
@@ -138,7 +138,7 @@ def create_archive(source, target=None, interpreter=None, main=None,
         with zipfile.ZipFile(fd, 'w', compression=compression) as z:
             for child in sorted(source.rglob('*')):
                 arcname = child.relative_to(source)
-                if filter is None or filter(arcname):
+                if filter is None or filter(arcname) and child.resolve() != arcname.resolve():
                     z.write(child, arcname.as_posix())
             if main_py:
                 z.writestr('__main__.py', main_py.encode('utf-8'))

diff --git a/Misc/NEWS.d/next/Library/2023-06-25-06-57-24.gh-issue-104527.TJEUkd.rst b/Misc/NEWS.d/next/Library/2023-06-25-06-57-24.gh-issue-104527.TJEUkd.rst
new file mode 100644 (file)
index 0000000..50b845b
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-06-25-06-57-24.gh-issue-104527.TJEUkd.rst
@@ -0,0 +1 @@
+Zipapp will now skip over apending an archive to itself.