After migrating to Kotlin 2.0, when I sync the project with the gradle files no issues arise. However, when I try to deploy to the device, I get the following error:
> Task :app:kspDebugKotlin FAILED
e: -api-version (2.0) cannot be greater than -language-version (1.9)
libs.versions.toml
[versions]
agp = "8.5.0-alpha08"
hiltAndroid = "2.51.1"
hiltAndroidCompiler = "2.51.1"
kotlin = "2.0.0"
ksp = "2.0.0-1.0.21"
coreKtx = "1.13.1"
junit = "4.13.2"
junitVersion = "1.1.5"
espressoCore = "3.5.1"
lifecycleRuntimeKtx = "2.8.0"
activityCompose = "1.9.0"
composeBom = "2024.05.00"
composeNavigation = "2.8.0-beta01"
serialization = "1.6.3"
constraintlayout = "1.0.1"
ktor = "2.3.11"
logbackClassic = "1.5.6"
[libraries]
androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
hilt-android = { module = "com.google.dagger:hilt-android", version.ref = "hiltAndroid" }
hilt-android-compiler = { module = "com.google.dagger:hilt-android-compiler", version.ref = "hiltAndroidCompiler" }
hilt-android-gradle-plugin = { module = "com.google.dagger:hilt-android-gradle-plugin", version.ref = "hiltAndroid" }
junit = { group = "junit", name = "junit", version.ref = "junit" }
androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
androidx-ui = { group = "androidx.compose.ui", name = "ui" }
androidx-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
androidx-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
androidx-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
androidx-material3 = { group = "androidx.compose.material3", name = "material3" }
navigation-compose = { module = "androidx.navigation:navigation-compose", version.ref = "composeNavigation"}
kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "serialization"}
androidx-constraintlayout = { module = "androidx.constraintlayout:constraintlayout-compose", version.ref = "constraintlayout" }
ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktor"}
ktor-client-android = { module = "io.ktor:ktor-client-android", version.ref = "ktor"}
ktor-client-serialization = { module = "io.ktor:ktor-client-serialization", version.ref = "ktor"}
ktor-client-logging = { module = "io.ktor:ktor-client-logging", version.ref = "ktor"}
logback-classic = { module = "ch.qos.logback:logback-classic", version.ref = "logbackClassic"}
[plugins]
androidApplication = { id = "com.android.application", version.ref = "agp" }
jetbrainsKotlinAndroid = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
kotlin-ksp = {id = "com.google.devtools.ksp", version.ref = "ksp"}
kotlin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin"}
build.gradle.kts (app/Module)
import org.jetbrains.kotlin.gradle.dsl.JvmTarget
import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
plugins {
alias(libs.plugins.androidApplication)
alias(libs.plugins.jetbrainsKotlinAndroid)
alias(libs.plugins.kotlin.serialization)
alias(libs.plugins.kotlin.ksp)
alias(libs.plugins.compose.compiler)
id("dagger.hilt.android.plugin")
id("kotlin-android")
id("kotlin-parcelize")
}
android {
namespace = "com.mobi.ripple"
compileSdk = 34
defaultConfig {
applicationId = "com.mobi.ripple"
minSdk = 29
targetSdk = 34
versionCode = 1
versionName = "1.0"
testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
vectorDrawables {
useSupportLibrary = true
}
}
buildTypes {
release {
isMinifyEnabled = false
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"),
"proguard-rules.pro"
)
}
}
kotlinOptions {
jvmTarget = JvmTarget.JVM_19.target
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_19
targetCompatibility = JavaVersion.VERSION_19
}
buildFeatures {
compose = true
}
composeOptions {
kotlinCompilerExtensionVersion = "1.5.14"
}
packaging {
resources {
excludes += "/META-INF/{AL2.0,LGPL2.1}"
}
}
}
kotlin {
compilerOptions {
apiVersion.set(KotlinVersion.KOTLIN_2_0)
jvmTarget.set(JvmTarget.JVM_19)
languageVersion.set(KotlinVersion.KOTLIN_2_0)
}
}
dependencies {
implementation(libs.androidx.core.ktx)
implementation(libs.androidx.lifecycle.runtime.ktx)
implementation(libs.androidx.activity.compose)
implementation(platform(libs.androidx.compose.bom))
implementation(libs.androidx.ui)
implementation(libs.androidx.ui.graphics)
implementation(libs.androidx.ui.tooling.preview)
implementation(libs.androidx.material3)
implementation(libs.hilt.android)
ksp(libs.hilt.android.compiler)
implementation(libs.androidx.constraintlayout)
testImplementation(libs.junit)
androidTestImplementation(libs.androidx.junit)
androidTestImplementation(libs.androidx.espresso.core)
androidTestImplementation(platform(libs.androidx.compose.bom))
androidTestImplementation(libs.androidx.ui.test.junit4)
debugImplementation(libs.androidx.ui.tooling)
debugImplementation(libs.androidx.ui.test.manifest)
implementation(libs.navigation.compose)
implementation(libs.kotlinx.serialization.json)
implementation(libs.ktor.client.core)
implementation(libs.ktor.client.android)
implementation(libs.ktor.client.serialization)
implementation(libs.ktor.client.logging)
implementation(libs.logback.classic)
}
build.gradle.kts (Project)
plugins {
alias(libs.plugins.androidApplication) apply false
alias(libs.plugins.jetbrainsKotlinAndroid) apply false
alias(libs.plugins.kotlin.ksp) apply false
alias(libs.plugins.kotlin.serialization) apply false
alias(libs.plugins.compose.compiler) apply false
}
buildscript {
dependencies {
classpath(libs.hilt.android.gradle.plugin)
}
}
I tried adding different configurations but nothing worked. Any suggestions?
You need to enable KSP2 for k2.0 by adding
ksp.useKSP2=true
to gradle.properties
Even thought you are using ksp2 its still using 1.9 under the hood
source:
https://android-developers.googleblog.com/2023/12/ksp2-preview-kotlin-k2-standalone.html