Hello guys, I'm trying to properly configure my so...

# ksp

[Davide Giuseppe Farella]

Hello guys, I'm trying to properly configure my sources to include KSP generated files (for Koin), but I keep failing 😅
I have 4 types of modules:
• KMP jvm only
• KMP jvm + Android (with some code generated from androidMain)
• Android library
• Android app
As now I see them in the IDE, all the tests are ok, the app runs ok on debug and release, but somehow it crashes on TestLab (debug) because a class generated from a KMP+Android module is not there.
I'll share my current config soon in the thread.

[Davide Giuseppe Farella]

There are some custom extensions, but the purpose should be clear by their signature

KMP jvm:

target.extensions.configure<KotlinMultiplatformExtension> { ext ->
  ext.sourceSets.getByName("commonMain").kotlin.srcDir("build/generated/ksp/jvm/jvmMain/kotlin")
 }

KMP w/ android:

target.extensions.configure<KotlinMultiplatformExtension> { ext ->
    ext.targetFromPreset(AndroidTargetPreset(target), ::configureAndroidTarget)
}
private fun configureAndroidTarget(target: KotlinAndroidTarget) {
    target.compilations.all { compilation ->
        compilation.defaultSourceSet.kotlin.srcDir(
            "build/generated/ksp/${compilation.name}/kotlin"
        )
    }
}

Android app/lib:

target.extensions.configureIfPresent<AppExtension> { appExtension ->
    appExtension.applicationVariants.all { variant ->
        target.kotlinExtension.sourceSets.getByName(variant.name).kotlin.srcDir(
            "build/generated/ksp/${variant.name}/kotlin"
        )
    }
}
target.extensions.configureIfPresent<LibraryExtension> { libraryExtension ->
    libraryExtension.libraryVariants.all { variant ->
        target.kotlinExtension.sourceSets.getByName(variant.name).kotlin.srcDir(
            "build/generated/ksp/${variant.name}/kotlin"
        )
    }
}

[yigit]

Might be a build order issue. Those hardcored build dirs doesn't tell anything to Gradle about dependencies so it doesn't know that a task must be run to generate them. Locally, if those tasks already run, you wouldn't notice the problem

[yigit]

This might be helpful : https://www.liutikas.net/2022/07/26/Better-Not-Depend-On-Tasks.html

[yigit]

To properly set dependencies, otherwise, you can also just use dependsOn to ensure the completion waits for the producer task

[Davide Giuseppe Farella]

I followed the doc from Koin Annotations and I tried to adapt it to my project 😄 I don’t find that part anymore tho 😕 What would be the right way to use generated code from sources, then? Should it work out of the box on most recent versions maybe?

[yigit]

No, idk about the documentation but Gradle cannot discover task dependencies from hardcoded strings (afaik).

You need to find the task that generates it and flat map from it. (Assuming srcDir accepts a provider). If not, just do dependsOn for the generating task

[yigit]

i have something similar to that here:
https://github.com/yigit/kotlin-sqlite-bindings/blob/main/sqlitebindings/build.gradle.kts#L73

where there is task that collects shared libraries from the native portion of a KMP project and adds them as resources for the jvm/android. (to be used via JNI).

you need to find the task that generates

"build/generated/ksp/${variant.name}/kotlin"

and then do:

kotlin.srcDir(
  generatorTask.flatMap { "build/generated/..."
   }
)

that flatMap (or map) from a taskProvider tells gradle about the relationship

[Davide Giuseppe Farella]

Ok, thank you! I'll take a look tomorrow, then, hoping I can solve it

[Davide Giuseppe Farella]

I found that bit I mentioned tho, not from the KSP doc, but from Koin sample

[yigit]

You don't need that for KSP though, it already does it for you

[Davide Giuseppe Farella]

I see, so I’ll try to drop those pieces of code and see where the problem is

[Davide Giuseppe Farella]

It seems like I was missing a kspAndroid in a KMP+Android module 🤦‍♂️

[Davide Giuseppe Farella]

Waiting for the truth to be told by TestLab 🙂

[Davide Giuseppe Farella]

It is fixed now 🎉