1.12.0

Released: August 31, 2023

feature

• [feature] [autogenerate] Added new feature to the "code formatter" function which allows standalone executable tools to be run against code, without going through the Python interpreter. Known as the exec runner, it complements the existing console_scripts runner by allowing non-Python tools such as ruff to be used. Pull request courtesy Mihail Milushev.

  References: #1275

usecase

• [usecase] [autogenerate] Change the default value of EnvironmentContext.configure.compare_type to True. As Alembic's autogenerate for types was dramatically improved in version 1.4 released in 2020, the type comparison feature is now much more reliable so is now enabled by default.

  References: #1248

bug

• [bug] [operations] Added support for op.drop_constraint() to support PostrgreSQL ExcludeConstraint objects, as well as other constraint-like objects that may be present in third party dialects, by resolving the type_ parameter to be None for this case. Autogenerate has also been enhanced to exclude the type_ parameter from rendering within this command when type_ is None. Pull request courtesy David Hills.

  References: #1300

• [bug] [commmands] Fixed issue where the revision_environment directive in alembic.ini was ignored by the alembic merge command, leading to issues when other configurational elements depend upon env.py being invoked within the command.

  References: #1299

• [bug] [autogenerate] Fixed issue where the ForeignKeyConstraint.match parameter would not be rendered in autogenerated migrations. Pull request courtesy Asib Kamalsada.

  References: #1302