Hey folks. Having an odd issue and wondering if anyone can shed some light onto the fundamental difference in the following code. I have a Gradle project which is shipping a custom Gradle plugin. This Gradle plugin is basically a collection of convention plugins for different languages and application types. “java-maven-jar”, “java-gradle-plugin”, “java-aws-lambda” etc. My Gradle plugin project actually applies the plugin to itself. It started as a Java project and was applying a plugin “companyName-java-gradle-plugin” but the core code has been slowing moving over to Kotlin. My plugins block looks like so:

plugins {
    kotlin("jvm") version "1.7.20"
    id("companyName-java-gradle-plugin")
}

Everything up to this point works fine, no issues whatsoever. I recently added Kotlin as a top level language in this convention plugin so I am able to switch my plugin block to

plugins {
    id("companyName-kotlin-gradle-plugin")
}

This required me to add the Jetbrains Kotlin plugin as an implementation dependency in my own build script vs getting that code from the plugins block and Gradle plugin portal.

implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.7.20")

I am applying the plugin internally like so

class InternalKotlinPlugin : Plugin<Project>
{
    override fun apply(project: Project) {
        project.plugins.apply(KotlinPlatformJvmPlugin::class.java)
        // other convention logic.
    }
}

This all seems to work fine from a compilation perspective but the addition of that dependency seems to have changed my buildscript classpath and I am seeing weird issues at runtime which leads me to believe its a classpath issue, but I haven’t proven this to be true yet. My ultimate question is: Is there any fundamental difference in the buildscript classpath between

plugins {
    kotlin("jvm") version "1.7.20"
}

vs

plugins {
    id("companyName-kotlin-gradle-plugin")
}

Where that custom plugin has an implementation dependency against the Kotlin plugin and is applying it via a class reference instead of the buildscript DSL?