Test Kotlin 2.1.0-Beta2 in CI

[drewhamilton]

Tests compatibility of current Poko main branch with the new Kotlin beta version.

[drewhamilton]

java.lang.NoSuchMethodError: 'org.gradle.api.provider.Property org.jetbrains.kotlin.gradle.dsl.KotlinCommonCompilerToolOptions.getExtraWarnings()'

This is thrown with 2.1.0-Beta2. I think this means we just won't be able to make 2.1 and 2.0 compatible, much like 2.0 and 1.9. Unless there's some Gradle magic we can do?

[JakeWharton]

That stack trace is weird. Isn't it KGP calling into itself that is causing the exception? Are there two KGPs on the Gradle classpath or something?

[JakeWharton]

This code:

Poko/sample/settings.gradle.kts

Lines 76 to 84 in 4e710fe

	create("libs") {
	from(files("../gradle/libs.versions.toml"))
	// Compile sample project with different Kotlin version than Poko, if provided:
	val kotlinVersionOverride = System.getenv()["poko_sample_kotlin_version"]?.nullIfBlank()
	kotlinVersionOverride?.let { kotlinVersion ->
	version("kotlin", kotlinVersion)
	}
	}

Needs to also live here:

Poko/sample/buildSrc/settings.gradle.kts

Lines 3 to 5 in 4e710fe

	create("libs") {
	from(files("../../gradle/libs.versions.toml"))
	}

Otherwise the buildSrc uses the enclosing project's libs.version.toml's KGP, whereas the sample itself uses the overridden KGP. This puts two copies onto the buildscript classpath which can cause a split-brain problem with classes from both being loaded at the same time producing otherwise impossible NSMEs and NCDFEs.

[JakeWharton]

I can send a PR for that later, if you don't get to it first.

[drewhamilton]

Ouch. Good find, fixed.