Developer namespaces have a 20 character limit

[Evan]

Developer namespaces have a 20 character limit, but SSO usernames, which are intended to ultimately replace developer namespaces, have no such restriction. GitHub has a maximum username length of 39 characters, which causes explosions when they go through SSO/store account creation.

Please increase or drop this character limit on developer namespaces.

[Natalia Bidart (nataliabidart)]

We can definitely increase to 30 which is the max_length we can allow respecting the Django's User model restriction (for the Django version we are using right now) as a first measure.

As soon as we migrate to a newer Django, we can lift this restriction even further to 150, see https://code.djangoproject.com/ticket/20846.

[Evan (ev)]

I don't think you disagree, but just so we're clearly on the same page: increasing to 30 does not fix this issue.

It looks like it's entirely possible to support more than 30 characters in Django 1.5+
https://docs.djangoproject.com/en/dev/releases/1.5/#configurable-user-model

Is there a reason you can't use a custom User model?

[Natalia Bidart (nataliabidart)]

We have rolled out Django 1.11 to the Store, so the username limit should be now lifted. I've tried to QA via BSI but I couldn't complete the steps, see the issue reported there for more information:

https://github.com/canonical-ols/build.snapcraft.io/issues/792

[Natalia Bidart (nataliabidart)]

While doing QA, I found a minor issue in the store end which is now on its way to staging and prod.