There is one place in the compiler where it copies a bit of AST and modifies it to add a base class to generic classes.
It would be nice if the compiler didn't need to know how to do this.

Linked PRs

• gh-123881: make compiler add the .generic_base base class without constructing AST nodes #123883
• gh-123881: Add additional test coverage for PEP 695 edge cases #123886
• [3.13] gh-123881: Add additional test coverage for PEP 695 edge cases (GH-123886) #123890
• [3.12] gh-123881: Add additional test coverage for PEP 695 edge cases (GH-123886) #123891