So the problem is: Given a particular

FormattablePythonTarget

there needs to be a unique way to get a

LintResult

There are two functions (both named

fmt

) which provide a way to go from a

FormattablePythonTarget

to a

LintResult

. The only difference between them, as far as the engine is concerned, is that one of them needs an

IsortSetup

and the other one needs a

BlackSetup

. And in all contexts, we can get both of those (because they’re just global things), so as far as the engine is concerned, there are two ways of doing the same thing, and it doesn’t understand.