No TypeParameter found for index T

[Scogun]

Describe the bug
After upgrade from 1.18.1 version to 2.0.0 I started to face an issue No TypeParameter found for index T

To Reproduce
I had next code:

(this.declaration as KSClassDeclaration).getAllSuperTypes().any { it.toClassName() == ITERABLE }

I started to face next issue:

KSType 'Comparable<String>' has type arguments, which are not supported for ClassName conversion. Use KSType.toTypeName().

After switching on toTypeName I face No TypeParameter found for index T

(this.declaration as KSClassDeclaration).getAllSuperTypes().any { it.toTypeName() == ITERABLE }

Expected behavior
toTypeName should work for wide generic classes.

Additional context
Maybe I don't see the reason why toTypeName requests TypeParameterResolver.

[ZacSweers]

Can you offer a minimally reproducing sample? This isn't really actionable on the current details offered

[Scogun]

The problem is introduced here.
I used toClassName for any classes. Right now it fails for generic ones.
I can change this code:

(this.declaration as KSClassDeclaration).getAllSuperTypes().any { it.toClassName() == ITERABLE }

to

(this.declaration as KSClassDeclaration).getAllSuperTypes().any { (it.declaration as KSClassDeclaration).toClassName() == ITERABLE }

but it also will fail here:

sourceType.toClassName() == STRING

if sourceType is generic.
It brings a lot of additional checkings.

[JakeWharton]

What we are asking for is a minimally-reproducing sample for the toTypeName crash.

[Scogun]

I know. It's just hard to make a small sample while it happens into kotlinpoet-ksp. So, I tried to explain.

[Brendon-Mendicino]

HI, having a similar issue, but i think the problem might be with KSP. I checked and when you evaluate the arguments in an annotation annotationType.resolved().arguments where it is declared in a different package, the argument is evaluated to the type parameter name (the actual one), this is my output for arguments=[INVARIANT E]. Then when you try to convert an annotation using toAnnotationSpec() the processor crashes.

let me know if I could be of any help, I might give you a branch of my code where this is error is happening and then you might take a look at it