Python Enhancement Proposals

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Packaging PEPs

Introduction

This is the index of all Python Enhancement Proposals (PEPs) labelledunder the ‘Packaging’ topic. This is a sub-index of PEP 0,the PEP index.

Packaging PEPs follow thePyPA specification update process.They are used to propose major additions or changes to the PyPA specifications.The canonical, up-to-date packaging specifications can be found on thePython Packaging Authority (PyPA)specifications page.

Index by Category

Process and Meta-PEPs

	PEP	Title	Authors
PA	609	Python Packaging Authority (PyPA) Governance	Dustin Ingram, Pradyun Gedam, Sumana Harihareswara

Provisional PEPs (provisionally accepted; interface may still change)

	PEP	Title	Authors
SP	708	Extending the Repository API to Mitigate Dependency Confusion Attacks	Donald Stufft

Accepted PEPs (accepted; may not be implemented yet)

	PEP	Title	Authors
SA	458	Secure PyPI downloads with signed repository metadata	Trishank Karthik Kuppusamy, Vladimir Diaz, Marina Moore, Lukas Puehringer, Joshua Lock, Lois Anne DeLong, Justin Cappos
SA	658	Serve Distribution Metadata in the Simple Repository API	Tzu-ping Chung
SA	668	Marking Python base environments as “externally managed”	Geoffrey Thomas, Matthias Klose, Filipe Laíns, Donald Stufft, Tzu-ping Chung, Stefano Rivera, Elana Hashman, Pradyun Gedam
SA	691	JSON-based Simple API for Python Package Indexes	Donald Stufft, Pradyun Gedam, Cooper Lees, Dustin Ingram
SA	714	Rename dist-info-metadata in the Simple API	Donald Stufft
SA	739	build-details.json 1.0 — a static description file for Python build details	Filipe Laíns	3.14
SA	753	Uniform project URLs in core metadata	William Woodruff, Facundo Tuesca
SA	770	Improving measurability of Python packages with Software Bill-of-Materials	Seth Larson
SA	794	Import Name Metadata	Brett Cannon

Open PEPs (under consideration)

	PEP	Title	Authors
S	480	Surviving a Compromise of PyPI: End-to-end signing of packages	Trishank Karthik Kuppusamy, Vladimir Diaz, Justin Cappos, Marina Moore
S	694	Upload 2.0 API for Python Package Indexes	Barry Warsaw, Donald Stufft, Ee Durbin
S	710	Recording the provenance of installed packages	Fridolín Pokorný
S	711	PyBI: a standard format for distributing Python Binaries	Nathaniel J. Smith
S	725	Specifying external dependencies in pyproject.toml	Pradyun Gedam, Jaime Rodríguez-Guerra, Ralf Gommers
S	752	Implicit namespaces for package repositories	Ofek Lev, Jarek Potiuk
P	755	Implicit namespace policy for PyPI	Ofek Lev
I	766	Explicit Priority Choices Among Multiple Indexes	Michael Sarahan
S	771	Default Extras for Python Software Packages	Thomas Robitaille, Jonathan Dekhtiar
P	772	Packaging Council governance process	Barry Warsaw, Deb Nicholson, Pradyun Gedam
S	777	How to Re-invent the Wheel	Emma Harper Smith
S	780	ABI features as environment markers	Klaus Zimmermann, Ralf Gommers	3.14
S	783	Emscripten Packaging	Hood Chatham
S	804	An external dependency registry and name mapping mechanism	Pradyun Gedam, Ralf Gommers, Michał Górny, Jaime Rodríguez-Guerra, Michael Sarahan
S	807	Index support for Trusted Publishing	William Woodruff
S	808	Including static values in dynamic project metadata	Henry Schreiner, Cristian Le
S	815	Deprecate RECORD.jws and RECORD.p7s	Konstantin Schütze, William Woodruff

Finished PEPs (done, with a stable interface)

	PEP	Title	Authors
SF	301	Package Index and Metadata for Distutils	Richard Jones	2.3
SF	376	Database of Installed Python Distributions	Tarek Ziadé	2.7, 3.2
SF	405	Python Virtual Environments	Carl Meyer	3.3
SF	425	Compatibility Tags for Built Distributions	Daniel Holth	3.4
SF	427	The Wheel Binary Package Format 1.0	Daniel Holth
SF	440	Version Identification and Dependency Specification	Alyssa Coghlan, Donald Stufft
SF	503	Simple Repository API	Donald Stufft
SF	508	Dependency specification for Python Software Packages	Robert Collins
SF	517	A build-system independent format for source trees	Nathaniel J. Smith, Thomas Kluyver
SF	518	Specifying Minimum Build System Requirements for Python Projects	Brett Cannon, Nathaniel J. Smith, Donald Stufft
SF	527	Removing Un(der)used file types/extensions on PyPI	Donald Stufft
SF	561	Distributing and Packaging Type Information	Emma Harper Smith	3.7
SF	566	Metadata for Python Software Packages 2.1	Dustin Ingram	3.x
SF	592	Adding “Yank” Support to the Simple API	Donald Stufft
SF	600	Future ‘manylinux’ Platform Tags for Portable Linux Built Distributions	Nathaniel J. Smith, Thomas Kluyver
SF	610	Recording the Direct URL Origin of installed distributions	Stéphane Bidoul, Chris Jerdonek
SF	621	Storing project metadata in pyproject.toml	Brett Cannon, Dustin Ingram, Paul Ganssle, Pradyun Gedam, Sébastien Eustace, Thomas Kluyver, Tzu-ping Chung
SF	625	Filename of a Source Distribution	Tzu-ping Chung, Paul Moore
SF	627	Recording installed projects	Petr Viktorin
SF	629	Versioning PyPI’s Simple API	Donald Stufft
SF	639	Improving License Clarity with Better Package Metadata	Philippe Ombredanne, C.A.M. Gerlach, Karolina Surma
SF	643	Metadata for Package Source Distributions	Paul Moore
SF	656	Platform Tag for Linux Distributions Using Musl	Tzu-ping Chung
SF	660	Editable installs for pyproject.toml based builds (wheel based)	Daniel Holth, Stéphane Bidoul
SF	685	Comparison of extra names for optional distribution dependencies	Brett Cannon
SF	700	Additional Fields for the Simple API for Package Indexes	Paul Moore
SF	715	Disabling bdist_egg distribution uploads on PyPI	William Woodruff
SF	721	Using tarfile.data_filter for source distribution extraction	Petr Viktorin	3.12
SF	723	Inline script metadata	Ofek Lev
SF	735	Dependency Groups in pyproject.toml	Stephen Rosen
SF	740	Index support for digital attestations	William Woodruff, Facundo Tuesca, Dustin Ingram
SF	751	A file format to record Python dependencies for installation reproducibility	Brett Cannon
SF	792	Project status markers in the simple index	William Woodruff, Facundo Tuesca

Historical Meta-PEPs and Informational PEPs

	PEP	Title	Authors
PS	438	Transitioning to release-file hosting on PyPI	Holger Krekel, Carl Meyer
PF	449	Removal of the PyPI Mirror Auto Discovery and Naming Scheme	Donald Stufft
PF	464	Removal of the PyPI Mirror Authenticity API	Donald Stufft
PF	470	Removing External Hosting Support on PyPI	Donald Stufft
PF	541	Package Index Name Retention	Łukasz Langa

Deferred PEPs (postponed pending further research or updates)

	PEP	Title	Authors
ID	423	Naming conventions and recipes related to packaging	Benoit Bryon
SD	491	The Wheel Binary Package Format 1.9	Daniel Holth
SD	778	Supporting Symlinks in Wheels	Emma Harper Smith

Rejected, Superseded, and Withdrawn PEPs

	PEP	Title	Authors
SS	241	Metadata for Python Software Packages	A.M. Kuchling
SW	243	Module Repository Upload Mechanism	Sean Reifschneider	2.1
SR	262	A Database of Installed Python Packages	A.M. Kuchling
SS	314	Metadata for Python Software Packages 1.1	A.M. Kuchling, Richard Jones	2.5
SS	345	Metadata for Python Software Packages 1.2	Richard Jones	2.7
SR	365	Adding the pkg_resources module	Phillip J. Eby
SW	381	Mirroring infrastructure for PyPI	Tarek Ziadé, Martin von Löwis
SS	386	Changing the version comparison module in Distutils	Tarek Ziadé
SR	390	Static metadata for Distutils	Tarek Ziadé	2.7, 3.2
IW	396	Module Version Numbers	Barry Warsaw
SR	402	Simplified Package Layout and Partitioning	Phillip J. Eby	3.3
IW	426	Metadata for Python Software Packages 2.0	Alyssa Coghlan, Daniel Holth, Donald Stufft
SR	439	Inclusion of implicit pip bootstrap in Python installation	Richard Jones	3.4
SW	459	Standard Metadata Extensions for Python Software Packages	Alyssa Coghlan
IR	496	Environment Markers	James Polley
IS	513	A Platform Tag for Portable Linux Built Distributions	Robert T. McGibbon, Nathaniel J. Smith
SR	516	Build system abstraction for pip/conda etc	Robert Collins, Nathaniel J. Smith
IS	571	The manylinux2010 Platform Tag	Mark Williams, Geoffrey Thomas, Thomas Kluyver
SR	582	Python local packages directory	Kushal Das, Steve Dower, Donald Stufft, Alyssa Coghlan	3.12
IS	599	The manylinux2014 Platform Tag	Dustin Ingram
SS	631	Dependency specification in pyproject.toml based on PEP 508	Ofek Lev
SR	633	Dependency specification in pyproject.toml using an exploded TOML table	Laurie Opperman, Arun Babu Neelicattu
SW	650	Specifying Installer Requirements for Python Projects	Vikram Jayanthi, Dustin Ingram, Brett Cannon
SR	662	Editable installs via virtual wheels	Bernát Gábor
SR	665	A file format to list Python dependencies for reproducibility of an application	Brett Cannon, Pradyun Gedam, Tzu-ping Chung
SW	704	Require virtual environments by default for package installers	Pradyun Gedam
SR	722	Dependency specification for single-file scripts	Paul Moore
SW	759	External Wheel Hosting	Barry Warsaw, Emma Harper Smith
SW	763	Limiting deletions on PyPI	William Woodruff, Alexis Challande

PEP Types Key

I —Informational: Non-normative PEP containing background, guidelines or other information relevant to the Python ecosystem
P —Process: Normative PEP describing or proposing a change to a Python community process, workflow or governance
S —Standards Track: Normative PEP with a new feature for Python, implementation change for CPython or interoperability standard for the ecosystem

More info in PEP 1.

PEP Status Key

A —Accepted: Normative proposal accepted for implementation
A —Active: Currently valid informational guidance, or an in-use process
D —Deferred: Inactive draft that may be taken up again at a later time
<No letter> —Draft: Proposal under active discussion and revision
F —Final: Accepted and implementation complete, or no longer active
P —Provisional: Provisionally accepted but additional feedback needed
R —Rejected: Formally declined and will not be accepted
S —Superseded: Replaced by another succeeding PEP
W —Withdrawn: Removed from consideration by sponsor or authors