Trying to update to Gradle 9.4 and getting

A problem occurred configuring project ':buildSrc'.
> Could not resolve all artifacts for configuration 'classpath'.
   > Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin-api:2.2.21
 Required by:
         buildscript of project ':buildSrc' > org.jetbrains.kotlin.plugin.serialization:org.jetbrains.kotlin.plugin.serialization.gradle.plugin:2.2.21 > org.jetbrains.kotlin:kotlin-serialization:2.3.0 > org.jetbrains.kotlin:kotlin-gradle-plugins-bom:2.3.0> Unable to find a variant with the requested capability: coordinates 'org.jetbrains.kotlin:kotlin-gradle-plugin-api-gradle813':
           - Variant 'apiElementsWithFixedAttribute' provides 'org.jetbrains.kotlin:kotlin-gradle-plugin-api:2.3.0'
           - Variant 'gradle80ApiElements' provides 'org.jetbrains.kotlin:kotlin-gradle-plugin-api:2.3.0'
           - Variant 'gradle80JavadocElements' provides 'org.jetbrains.kotlin:kotlin-gradle-plugin-api:2.3.0'
           - Variant 'gradle80RuntimeElements' provides 'org.jetbrains.kotlin:kotlin-gradle-plugin-api:2.3.0'

Works for me in a simple project

Yeah

org.jetbrains.kotlin.plugin.serialization:org.jetbrains.kotlin.plugin.serialization.gradle.plugin:2.2.21 > org.jetbrains.kotlin:kotlin-serialization:2.3.0

That's interesting. Something is upgrading your version of the serialization plugin

Let me try check dependency

You can run something like

./gradlew -p buildSrc buildEnvironment

I can not run anything since configuration fails

Even in buildSrc?

Yeah, it looks like

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile

plugins {
    `java-gradle-plugin`
    `kotlin-dsl`
    alias(libs.plugins.android.lint)
    alias(libs.plugins.kotlin.serialization)
}

gradlePlugin {
  // bunch of our plugins
}

dependencies {
    implementation(libs.androidgradleplugin)
    implementation(libs.android.gradle.cache.fix)
    implementation(libs.kotlin.gradle.plugin)

    implementation(libs.kotlinpoet)

    implementation(libs.kotlinx.coroutines.core)
    implementation(libs.kotlinx.serialization.core)
    implementation(libs.kotlinx.serialization.json)
    implementation(libs.kotlinx.serialization.xml)
    implementation(platform(libs.retrofit.bom))
    implementation(libs.retrofit)
    implementation(libs.retrofit.converter.kotlinx.serialization)

    // phrase java client
    implementation(libs.phrase.java)
    // start of dependencies of phrase java client
    implementation(libs.javax.annotation.api)
    implementation(libs.findbugs)
    // added because DataDog needs newer version of okhttp
    implementation(platform(libs.okhttp.bom))
    implementation(libs.okhttp)
    implementation(libs.okhttp.logging.interceptor)
    implementation(libs.gson)
    implementation(libs.gson.fire)
    // end of dependencies of phrase java client

    testImplementation(libs.junit)

    lintChecks(libs.gradle.lint.rules)
}

tasks.withType(KotlinCompile::class.java) {
    compilerOptions {
        freeCompilerArgs.addAll(
            // Kotlin annotation changes <https://youtrack.jetbrains.com/issue/KT-73255>
            "-Xannotation-default-target=param-property",
            // If data class has private constructor then copy is private also
            "-Xconsistent-data-class-copy-visibility",
        )
    }
}

> That's interesting. Something is upgrading your version of the serialization plugin Not of the plugin. The plugin depends on

kotlin-serialization:2.3.0

which is an update from 2.2.21 for some reason

Let's see if it's my dear friend

kotlin-dsl

Probably this is it

`kotlin-dsl`
    alias(libs.plugins.kotlin.serialization)

Yea

Or upgrade the serialization plugin

Oke, I can try to fix it, but does it mean we cook gradle wrong?

With

buildSrc

you develop build logic for the Gradle version that is running. So best is to use the embedded Kotlin version. The

kotlin-dsl

plugin does. But you apply a different version of the serialization plugin which might lead to a conflict here.

Yep. It's a kotlin problem, you can't have KGP 2.3 with the 2.2 serialization Gradle plugin

Or if you did not use

kotlin-dsl

as Martin suggests, even though I greatly dislike that suggestion in general

Oke, maybe time for us to update kotlin

Nowandroid uses kotlin dsl

Interestingly, they backtracked on precompiled script plugins because it was slow

Thanks people, let me think. And looks like Gradle knows about it and no need to create an issue for them on Github. It is by design.

kotlin-dsl

is not identical to precompiled script plugins, not even to Kotlin DSL precompiled script plugins. That is just one aspect of

kotlin-dsl

. If you have a performance problem with precompiled Kotlin DSL script plugins, you can just use "normal" KT files to write the plugins, but you can still use

kotlin-dsl

for its other benefits. Even though you see the benefits as drawbacks, but you know that I greatly dislike that blog post and see it exactly the other way around than what is written there except for the performance thing if it is actually a problem for a project. 😉

Yep, agree to disagree!

I didn't fix it yet. I mean I moved to build-logic but I still have warning about kotlin version and gradle dsl

Turned out to be a bug. I'd wait for 9.4.1