Which is the "proper"/best-practice way below? ``...

# gradle

[Gavin Ray]

Which is the "proper"/best-practice way below?

tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
    kotlinOptions.useK2 = true // 1
    compilerOptions {
        useK2.set(true)        // 2
    }
}

[Javier]

2, indeed 1 is not working any more with 1.8.0 I think (for sure with 1.8.255-SNAPSHOT)

[Gavin Ray]

Oh, very good to know, as I am using 1.8 and Gradle 8 -- ty!

[Javier]

Are you not getting a deprecated warning with 1?

[Gavin Ray]

I was in the process of potentially transitioning from a setup like this:

tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile>().configureEach {
    kotlinOptions.javaParameters = true
    kotlinOptions.freeCompilerArgs = Constants.KOTLIN_COMPILER_ARGS
}

  val KOTLIN_COMPILER_ARGS = listOf(
        "-opt-in=kotlin.RequiresOptIn",
        "-opt-in=kotlin.Experimental",
        "-Xenhance-type-parameter-types-to-def-not-null",
        // ...
)

Currently using Gradle 8.0 Milestone-2 and Kotlin 1.8.0-RC
(About to upgrade to Gradle 8-M5)

[Gavin Ray]

I think I may just keep the giant COMPILER_ARGS block since it's uniform though
Separately enabling k2, incremental etc would mean pulling those args out into different places but still having this big block

It'd be nice to have Gradle variables for things like these:

"-Xjsr305=strict",
"-Xcontext-receivers",
"-Xextended-compiler-checks",
"-Xuse-fast-jar-file-system",
"-Xuse-fir-extended-checkers"

[Gavin Ray]

(Maybe they already exist and I dunno about them)

[Vampire]

Which is the "proper"/best-practice way below?

Neither.
Because you use tasks.withType<...> { ... } which eagerly realizes all tasks of that type unnecessarily, use tasks.withType<...>().configureEach { ... } instead. 😉