I've never used arrow before so i tried to add it ...

# arrow

[bj0]

I've never used arrow before so i tried to add it to an existing project and created a function with typed errors based on the documentation, but I'm getting the following compile error:

> Task :cfe:kaptDebugKotlin FAILED
/mnt/data/code/android/app/app/build/tmp/kapt3/stubs/debug/.../app/MessageServiceKt.java:13: error: cannot access Raise
    arrow.core.raise.Raise<? super CommandError> $this$parseMessage, @org.jetbrains.annotations.Nullable
                    ^
  bad class file: /home/user/.gradle/caches/transforms-3/3dfc757af27868464b7f0dfba03b664d/transformed/jetified-arrow-core-jvm-1.2.0-RC.jar(/arrow/core/raise/Raise.class)
    undeclared type variable: T
    Please remove or make sure it appears in the correct subdirectory of the classpath.

I tried searching but Google only has 2 hits, one is an unanswered github issue on the dagger project and the other is a log of this chat from 3 weeks ago that said "maybe it will be fixed in 1.8.21" (it isn't). Anyone know the cause or a workaround to this issue?

[simon.vergauwen]

Hey @bj0,
This is really confusing to me since Raise is just an interface.

Is Raise and any kapt related code in the same file? Someone reported to me that moving it to a separate file fixed the problem for them

[bj0]

The only thing I can think that would be kapt related would be one data class which is @Serializable

[bj0]

i moved it out of the file and i get the same error

[bj0]

the generated code looks normal, why would it be saying bad class file to the downloaded arrow-core-jvm file?

[simon.vergauwen]

@Serializable from KotlinX is not kapt but a compiler plugin

[simon.vergauwen]

Hmm, that’s really weird 😕

[bj0]

I upgraded to AGP 8 which requires JDK 17, could it be related to the JDK version? (seems like kapt ignores jvmTarget https://youtrack.jetbrains.com/issue/KT-55947)

[bj0]

the only thing i'm using kapt for, then, is dagger, but there is no dagger code in the file with Raise