Support using auto with Postgres ArrayFields

[colinmcdonald22]

Description

Previously, any django.contrib.postgres.fields.ArrayFields used in models had to be typed manually (say, as list[MyEnum]). Now they're compatible with auto, and resolve to a List of the type of base_field.

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Documentation

Issues Fixed or Closed by This PR

Fix #200

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[colinmcdonald22]

Currently it seems like there's two issues here:

1. I'm always adding Postgres dependencies to dev installs. I'd imagine we'd want to make sure tests pass w/o Postgres deps installed (for if they're not at runtime) - is there any precedent for splitting dev dependencies like this? I've only seen Django/Python versions handled specially, not any other optional dependencies.
2. Even with Postgres dependencies added (verified w/ Poetry output in GH Actions logs), this is still failing - even though it passes locally. I'll dig more into this soon.

[baseplate-admin]

Shouldn't we use psycopg3 ?

Django by default now uses psycopg3

[bellini666]

Shouldn't we use psycopg3 ?

Django by default now uses psycopg3

The dependency here is a "dev" one and mostly for tests, meaning that if we used psycopg3 we would not be able to test on django 4.1 or older

[noamsto]

Why was this PR was closed and not merged?
Is there missing todos here?

[patrick91]

@bellini666 do you think we should get this in?

[bellini666]

@bellini666 do you think we should get this in?

Yes I do! It makes sense

Not sure why @colinmcdonald22 closed this, but I can take over it to ensure it will get in

[noamsto]

@bellini666
Maybe this PR should be re-opened so it won't be forgotten ?

[dperetti]

I need this!

[bellini666]

I need this!

You shall have this #567