Dear Steve,
thanks for your feedback. I did not understand all details of your design decisions but I am OK with that.

Variant A is fine for me, too. The important to points of A for me are 1) that the checkboxes on page 1 are moved up directly under the "Install Now" to make clear where they belong to and 2) the (easier to understand) separation between interpreter- (page2) and launcher-settings (page3).

My apologize but I am not able to create PRs/patches. I am not familiar with your development environment and not able to invest time to learn it because in the feature it does not seems like I will create more patches for something because I do not have the expertise for a python interpreter.

But I understand that is a question of resources. If there are currently now resources I would recommend to keep this ticket open.