I've been maintaining my contrib projects using https://github.com/ddev/ddev-drupal-contrib for some time now, and have just been leaving the .ddev folder uncommitted.
But now that DDEV has become the gold standard for Drupal local development, I feel it is now safe to commit the .ddev folder to the project (as recommended by ddev-drupal-contrib) and then document in the README.md how to setup a local environment for contribution/maintenance.
Optional. Commit the changes in the .ddev folder after this plugin installs. This saves other users from having to install this integration.
Other projects where .ddev has been committed (by Moshe - Maintainer of DDEV Drupal Contrib).
https://git.drupalcode.org/project/domain_perm/-/tree/2.0.x?ref_type=heads
drush/drush to dev dependencies of the composer.json for standard cli tooling access. Note this module currently doesn't have any custom Drush commands, but it helps to have a fully functional DDEV local environment including drush, and it seems this is currently the only way.Active
1.0
Code
Actually I think this is safe enough to move forward with, discussed with Graber in Slack and while he may not use it, it will hopefully make it easier for others to contribute back.