0.9.0 beta 3

What's Changed

• Support unicode METADATA in the description again
• Restore RFC822Message with support for unicode
• Restore write_to_rfc822 with support for any Message
• Restore recommendation to use string instead of bytes

Full Changelog: 0.9.0b2...0.9.0b3

0.9.0 beta 2

What's Changed

• Support unicode METADATA again
• Remove the custom RFC822Message entirely, replaced with a custom Policy (which also handles multilines)
• Handle multiline the way setuptools does with smart indentation
• Remove write_to_rfc822
• Remove the multiline warning for all metadata
• Add some unicode and reading tests
• Swap EmailMessage for Message
• Add PyPI attestations

Full Changelog: 0.9.0b1...0.9.0b2

0.9.0 beta 1

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). The beta release is intended for backend authors to try out the changes before a final release.

What's Changed

Features:

• Added PEP 639 support for SPDX license and license files, METADATA 2.4
• Validate extra keys (warning, opt-in error)
• Validate project name
• Validate entrypoint group names
• Add multiline warning

Fixes:

• Correct typing for emails
• Match EmailMessage spacing

Refactoring:

• Move fetcher methods
• Put validation in function
• Prepare for EmailMessage
• Use EmailMessage class

Internal and CI:

• Add 3.13 to testing
• Add ruff-format
• Actions and dependabot
• Better changelog auto-generation
• Generate attestations for releases
• macos-latest now points at macos-14
• Refactor and cleanup tests
• Add human readable IDs to tests
• Fix coverage context

Full Changelog: 0.8.0...0.9.0b1

0.8.0

What's Changed

• 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

Full Changelog: 0.8.0rc2...0.8.0

0.8.0 RC 2

What's Changed

• fix: typing annotation for StandardMetadata.from_pyproject() by @dnicolodi in #111
• fix: typo in exception message by @dnicolodi in #108
• revert: validate description by @henryiii in #112
• chore: bump to 0.8.0rc2 by @henryiii in #113

Full Changelog: 0.8.0rc1...0.8.0rc2

0.8.0 RC 1

What's Changed

• 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
• Validate the description is one line
• Separate core metadata keywords with commas, following the (modified) spec
• An error message reported project.license instead of project.readme
• Produce slightly cleaner tracebacks
• The build backend is now flit-core

Full Changelog: https://github.com/pypa/pyproject-metadata/commits/0.8.0rc1