How to not Allow Some Matrices Together

GitHub Actions
#1

The actual question.

Is there a way to ban some matrix combinations in Github Actions?

The problem is described better on StackOverflow, so I gave link to that. The answers on both platforms are welcome.

#2

Example excluding configurations from a matrix 

This should work.

matrix:
  python-version: [3.5, 3.6, 3.7]
  django-version: [1.11, 2.0, 2.1, 2.2]

  exclude:
    - python-version: 3.7
      django-version: 1.11
#3

What if I have to exclude multiple versions, such as excluding:

 - py3.7 and dj1.11

 - py3.8 and dj1.11

Apparently, python-version: [3.7, 3.8] will not work.

Edit: Okay okay, I think I can manage it with if.

#4

Just add another exclude for python3.8

matrix:
  python-version: [3.5, 3.6, 3.7, 3.8]
  django-version: [1.11, 2.0, 2.1, 2.2]

  exclude:
    - python-version: 3.7
      django-version: 1.11
    - python-version: 3.8
      django-version: 1.11