hi, I am trying to make a multiplatform project wi...

# kapt

[Anders Carlsen]

hi, I am trying to make a multiplatform project with jvm and androidTarget - in the Android part I use Hilt to annotate some shared viewmodels, this works fine when running on android, but when trying to build jvm target it fails:

Execution failed for task ':moduleName:kaptKotlinJvm'.
> Cannot query the value of this provider because it has no value available.
  The value of this provider is derived from:
    - task ':moduleName:kaptGenerateStubsKotlinJvm' property 'kotlinCompileDestinationDirectory'

If I remove Kapt plugin it works on jvm, but the Hilt kapt tasks won’t be run and I get runtime error when using viewModel on Android.

this is the build.gradle.kts file:

plugins {
    kotlin("multiplatform")
    id("com.android.library")
    kotlin("kapt")
}

kotlin {
    jvm()
    androidTarget()

    sourceSets {

        val commonMain by getting {
            dependencies {
                implementation(Deps.kotlinCoroutines)
            }
        }

        val commonTest by getting {
            dependencies {
                implementation(kotlin("test"))
            }
        }

        val jvmMain by getting {
            dependencies {
                implementation(Deps.voyagerNavigator)
                implementation(Deps.voyagerKoin)
            }
        }

        val androidMain by getting {
            kotlin.srcDir("src/commonMain/kotlin")
            dependencies {
                implementation(Deps.kotlinCoroutinesAndroid)
                implementation(Deps.androidxLifecycleViewModel)
                implementation(Deps.googleHilt)
                configurations["kapt"]?.dependencies?.add(project.dependencies.create(Deps.googleHiltCompiler))
            }
        }
    }
}

android {
    namespace = "package"
    compileSdk = ConfigData.androidCompileSdkVersion

    defaultConfig {
        minSdk = ConfigData.androidMinSdkVersion
    }
    sourceSets["main"].apply {
        manifest.srcFile("src/androidMain/AndroidManifest.xml")
        res.srcDirs("src/androidMain/resources")
        resources.srcDirs("src/commonMain/resources")
    }
    compileOptions {
        sourceCompatibility = Versions.javaVersion
        targetCompatibility = Versions.javaVersion
    }
    kotlin {
        jvmToolchain(Versions.javaJvmTarget.toInt())
    }
}

[tapchicoma]

Should be fixed in 1.9.20-beta

[Mikhail]

Hi, Having the same issue. Tested with 1.9.20-beta and 1.9.20-RC2, and it reproduces there.

[tapchicoma]

@Mikhail do you have a repro project?

[Mikhail]

It is huge and complicated. It would be difficult to trim it to minimal reproducible example.
If there is any workaround, I can try to apply it and retest.
Otherwise I can't tell how soon I can provide repro project.

[tapchicoma]

ah, sorry. I've understand what is going on

[tapchicoma]

basically in MPP it is not possible to use Kapt with Android and JVM in the same module. Let me find related issue

[tapchicoma]

This is the main issue: https://youtrack.jetbrains.com/issue/KT-30878

For kapt task configuration error I will create a separate issue, but it will not solve the main one

[tapchicoma]

basically workaround for now to use separate Gradle modules for JVM and Android sad panda

[Mikhail]

It works fine with 1.8.22. Only start appearing during migration to 1.9.10
It is indeed kmp project with jvm and android targets.

[tapchicoma]

annotation processors could also generate Java code - that is why kapt requires withJava() which is not working with JVM + Android. Probably we could add some switch that should be explicitly turned on when all AP generates Kotlin code.

[Anders Carlsen]

My workaround is not pretty, but I basically disallow applying kapt plugin for specific taskNames
(if some have a solution for a nicer workaround that would be appreciated):

if (gradle.startParameter.taskNames.contains("desktop:run")) {
   println("Running without kapt")
} else {
   println("Running with kapt for task ${gradle.startParameter.taskNames.firstOrNull()}")
   apply(plugin = "kotlin-kapt")
}