Changelog

Unreleased

  • Remove Python 3.7 support

0.9.1 (10-03-2024)

This release fixes form feeds in License files using pre-PEP 639 syntax when using Python older than 3.12.4; this is a regression in 0.9.0 from moving to the standard library email module. Some other small fixes to validation messages were applied.

Fixes:

  • Handle form feed for Python <3.12.4

  • Some touchup based on packaging PR

Docs:

  • Fix packaging.licenses example code

Internal and CI:

  • Speed up CI a bit, add Python 3.14 alpha testing

0.9.0 (22-10-2024)

This release adds PEP 639 support (METADATA 2.4), refactors the RFC messages, and adds a lot of validation (including warnings and opt-in errors), a way to produce all validation errors at once, and more. The beta releases are intended for backend authors to try out the changes before a final release.

Features:

  • Added PEP 639 support for SPDX license and license files, METADATA 2.4

  • Validate extra keys (warning, opt-in error)

  • Functions to check top level and build-system (including PEP 735 support)

  • Add TypedDict’s in new module for typing pyproject.toml dicts

  • all_errors=True causes ExceptionGroup’s to be emitted

  • Support METADATA 2.1+ JSON format with new .as_json() method

Fixes:

  • Match EmailMessage spacing

  • Handle multilines the way setuptools does with smart indentation

  • Warn on multiline Summary (project.description)

  • Improve locking for just metadata fields

  • Error on extra keys in author/maintainer

  • URL name stylization removed matching PEP 753

Refactoring:

  • Move fetcher methods

  • Put validation in method

  • Make RFC822Message compatible with and subclass of EmailMessage class with support for Unicode

  • Remove indirection accessing metadata_version, add auto_metadata_version

  • Rework how dynamic works, add dynamic_metadata

  • Use dataclass instead of named tuple

  • Use named arguments instead of positional

  • Spit up over multiple files

  • Remove DataFetcher, use static types wherever possible

  • Reformat single quotes to double quotes to match packaging

  • Produce standard Python repr style in error messages (keeping double quotes for key names)

  • Show the types instead of values in error messages

Internal and CI:

  • Better changelog auto-generation

  • macos-latest now points at macos-14

  • Refactor and cleanup tests

  • Add human readable IDs to tests

  • Require 100% coverage

Docs:

  • Include extra badge in readme

  • Rework docs, include README and more classes

  • Changelog is now in markdown

  • Better API section

0.8.1 (07-10-2024)

  • Validate project name

  • Validate entrypoint group names

  • Correct typing for emails

  • Add 3.13 to testing

  • Add ruff-format

  • Actions and dependabot

  • Generate GitHub attestations for releases

  • Add PyPI attestations

  • Fix coverage context

0.8.0 (17-04-2024)

  • Support specifying the metadata_version as 2.1, 2.2, or 2.3

  • Always normalize extras following PEP 685

  • Preserve the user-specified name style in the metadata. .canonical_name added to get the normalized name

  • Require “version” in the dynamic table if unset (following PEP 621)

  • Support extras using markers containing “or”

  • Support empty extras

  • Using .as_rfc822() no longer modifies the metadata object

  • Fix email-author listing for names containing commas

  • Separate core metadata keywords with commas, following the (modified) spec

  • An error message reported project.license instead of project.readme

  • Produce slightly cleaner tracebacks Fix a typo in an exception message

  • Subclasses now type check correctly

  • The build backend is now flit-core

0.7.1 (30-01-2023)

  • Relax pypa/packaging dependency

0.7.0 (18-01-2023)

  • Use UTF-8 when opening files

  • Use tomllib on Python >= 3.11

0.6.1 (07-07-2022)

  • Avoid first and last newlines in license contents

0.6.0 (06-07-2022)

  • Make license and readme files pathlib.Path instances

  • Add the license contents to the metadata file

  • Add support for multiline data in metadata fields

0.5.0 (09-06-2022)

  • Renamed project to pyproject_metadata

  • Support multiple clauses in requires-python

  • Error out when dynamic fields are defined

  • Update dynamic field when setting version

0.4.0 (30-09-2021)

  • Use Core Metadata 2.1 if possible

  • Fix bug preventing empty README and license files from being used

0.3.1 (25-09-2021)

  • Avoid core metadata Author/Maintainer fields in favor of Author-Email/Maintainer-Email

0.3.0.post2 (15-09-2021)

  • Fix Python version requirement

0.3.0.post1 (13-09-2021)

  • Add documentation

0.3.0 (13-09-2021)

  • Added RFC822Message

  • Refactor StandardMetadata as a dataclass

  • Added StandardMetadata.write_to_rfc822 and StandardMetadata.as_rfc822

0.1.0 (25-08-2021)

  • Initial release