@MrMebelMan please put related commits in one PR but with separate commits. That makes it easier to review.

Note also that Django 2.0 won't be added back because it's EOL.

cc @lsix

Also, we prefer to have tests working. It's not always possible but give it a try. If it doesn't work, explain with a comment why not.

@MrMebelMan please put related commits in one PR but with separate commits. That makes it easier to review.

Sure!

Also, we prefer to have tests working. It's not always possible but give it a try. If it doesn't work, explain with a comment why not.

I am just starting out with Nix and still unsure about how to run tests :)
I'll RTFM and update my other PRs, thank you. I guess, this one can be closed, since Django 2.0 is EOL?

Django-2.0 reached EOL on April 1, 2019 (c.f. https://www.djangoproject.com/download/). We still support 1.11, 2.1 and 2.2 (the 2.* being python3 only).

I close this PR and will have a look at the others later today.

And to be fair, none of the Django derivations are tested in nixpkgs since it would require stuff we do not have in isolated environments (such as databases servers). But yes, we could try to test what does not require those “impurities”. I guess the line in this PR was copied from existing derivations.