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A tool for reordering alembic migrations

Project description

The ambix tool is intended to be used to clean up alembic histories. It can flatten badly branched alembic histories by using a toplogical sort. It can also delete a migration with a specific revision.


The ambix tool is able to re-write your alembic python scripts and delete them. Use mindfully, and make sure that you have used version control or some other mechanism to backup your migration folder before you use ambix.


  • Python 3.4+


Install using pip:

$ pip install ambix


To flatten alembic migrations, run the following command:

$ ambix-flatten <your-migration-directory>

To delete a specific revision, run the following command:

$ ambix-prune <your-migration-directory> <id-of-revision-to-delete>

To rebase a migration on different bases, run the following command:

$ ambix-rebase <your-migration-directory> <id-of-revision-to-rebase> <id-of-first-new-base> <id-of-second-new-base> …

Project details

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