i don't honestly understand what it means by

completing type inference

since I've tried importing precisely either of those functions, as well as being as specific with class types as possible, nothing changes, and it shouldn't matter anyways? Maybe I should just reinstall.

usually you see that error when the compiler can’t deduce what the resulting type should be

that's weird, because I designated it specifically

but that doesn’t seem to be the real issue

val a: ArrayList<Int> = arrayListOf(2)

gives me the same error

right, I don’t expect it to work in any case since the generic type isn’t the root cause

is it having a hard time figuring if it wants to use the kotlin or java implementation? doesn't kotlin just use the java one?

Are you on a latest version?

it may be worth reinstalling the kotlin plugin at the least

Yeah, I'm on 1.2.41