1.15.0

Released: March 4, 2025

changed

[changed] [general] Support for Python 3.8 is dropped as of Alembic 1.15.0; this version is
now EOL so Python 3.9 or higher is required for Alembic 1.15.
[changed] [general] Support for SQLAlchemy 1.3, which was EOL as of 2021, is now dropped from
Alembic as of version 1.15.0. SQLAlchemy version 1.4 or greater is
required for use with Alembic 1.15.0.
[changed] [general] Installation has been converted to use PEP 621, e.g. pyproject.toml.

[usecase] [autogenerate] Index autogenerate will now render labels for expressions
that use them. This is useful when applying operator classes
in PostgreSQL that can be keyed on the label name.
References: #1603
[usecase] [autogenerate] Add revision context to AutogenerateDiffsDetected so that command can be
wrapped and diffs may be output in a different format. Pull request
courtesy Louis-Amaury Chaib (@lachaib).
References: #1597

[bug] [environment] Added a basic docstring to the migration template files so that the
upgrade/downgrade methods pass the D103 linter check which requires a
docstring for public functions. Pull request courtesy Peter Cock.
References: #1567
[bug] [autogenerate] Fixed autogenerate rendering bug where the deferrable element of
UniqueConstraint, a bool, were being stringified rather than repr'ed
when generating Python code.
References: #1613