Great post! Regarding the database, would the fixture possibly benefit from creating a single database in postgres, and then making copies of it for each worker using https://www.postgresql.org/docs/current/manage-ag-templatedb...? Then it doesn't need to run the migration lots of times. Possibly even faster than the squashed migration?
Excellent idea, and something I tried a little while back.
The `pytest-postgresql` plugin used has the ability to do this natively, but when we tried it out we found that we had other issues with developing on a Linux machine.
