Needed for #472 as well as for few other things such as fully working #1088 since currently some ASTs still linger. Should also improve performance a bit since we can delay some activities, such as linting run until everything is settled.

One possible way is to simulate analysis run, i.e.

• Run all sessions but with only parsing in order determine final session and then
• Run analysis without parsing repeating the above.

Technically end point should be the same.