8000 PEP 778: Supporting Symlinks in Wheels by emmatyping · Pull Request #3786 · python/peps · GitHub
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PEP 778: Supporting Symlinks in Wheels #3786

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Merged
merged 13 commits into from
Jul 9, 2025
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PEP 778: Supporting Symlinks in Wheels #3786

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78c4086
Add PEP 778 and reserve 777
emmatyping May 20, 2024
888278e
Add Paul Moore as PEP delegate
emmatyping May 22, 2024
b231bca
Add Paul Moore as PEP delegate
emmatyping May 22, 2024
48a2f0f
Update peps/pep-0778.rst
emmatyping Oct 9, 2024
9d28e9a
Remove extra underline
emmatyping Oct 9, 2024
83d484d
Fix misspelling
emmatyping Oct 9, 2024
bdf9e2d
Remove PEP 777
emmatyping Oct 9, 2024
01e0329
Add codeowners
emmatyping Oct 9, 2024
c78e515
Merge branch 'main' into pep-777-778
hugovk Nov 24, 2024
61fe8bd
Remove third p from suppport
emmatyping Nov 27, 2024
1ed60b5
Mark PEP 778 deferred
emmatyping Jul 3, 2025
0b1e1fd
Apply suggestions from Barry to PEP text
emmatyping Jul 9, 2025
0c553db
Fix lint error
emmatyping Jul 9, 2025
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Mark PEP 778 deferred
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@emmatyping
emmatyping committed Jul 3, 2025
commit 1ed60b5f156865185269e903dd2dc1cfc6006cdf
21 changes: 19 additions & 2 deletions peps/pep-0778.rst
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@@ -1,13 +1,15 @@
PEP: 778
Title: Supporting Symlinks in Wheels
Author: Ethan Smith <ethan@ethanhs.me>
Author: Emma Harper Smith <emma@python.org>
Sponsor: Barry Warsaw <barry@python.org>
PEP-Delegate: Paul Moore <p.f.moore@gmail.com>
Status: Draft
Discussions-To: https://discuss.python.org/t/pep-778-supporting-symlinks-in-wheels/53824
Status: Deferred
Type: Standards Track
Topic: Packaging
Requires: 777
Created: 18-May-2024
Post-History: `10-Oct-2024 <https://discuss.python.org/t/pep-778-supporting-symlinks-in-wheels/53824>`__

Abstract
========
Expand All @@ -17,6 +19,21 @@ installed. To properly handle distributing libraries in wheels, we propose a new
metadata file to handle symlinks in a platform portable manner. This specification requires
a new wheel major version, discussed in :pep:`777`.

PEP Defferal
============

This PEP has been deferred until a better compatibility story for major changes to the wheel
format is established. Once a compatibility story is established for wheels which allows backwards
incompatible behavior in an unobtrusive way, the following points should be addressed in this PEP:

- Re-focus topic to just symliinks for shared libraries on Unix platforms. Perhaps tie to
platform tags?
- Should the symlinks be materialized as file attributes in the archive or a ``LINKS`` file?
Could it be encoded in ``RECORD``?
- Clarify that this PEP is insufficient to be useful for PEP 660 editable installs since it will no
longer be cross platform.
- Describe fallback behavior in instances where symlinks are unavailable on Unix platforms.

Motivation
==========

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