Why mysql instead of postgres?

[Centuriondan]

I'm interested as to why the default install via pip requirements.txt serves mysql rather then the django recommended postgres.

I got hit with the issue that the psycopg not being installed and mysqlclient install failing because that requires mysql dev files to be installed on the host system. As a regular django user this seemed odd.

Can I suggest at a minimum a note in the installer text for that method and 2 requirement.txt files, one for postgres and one for mysql and direct users to choose which one suits their needs as part of the install instructions?

[DjangoCRM]

Yes, please, you can add a notice to the installation instructions that the requirements.txt file contains MySQL dependencies by default.
As for the second and even third requirements.txt file (for SQLite), dependabot currently monitors requirements.txt and setup.cfg updates. If you configure it to monitor new files as well, I'm fine with that.