How to setup serialization in IntelliJ/Kotlin?

Question

My apologies for a noob question: I\'m trying to check out how serialization works in Kotlin.

To this end, I created a Gradle project like this:

edi

Answer 1

Finally, figured it out. A BUG in IntelliJ IDEA was foiling my troubleshooting.

Leaving the answer for anyone who might find this question via Google:

build.gradle.kt needs to be

plugins {
    java
    kotlin("jvm") version "1.3.71"
    kotlin("plugin.serialization") version "1.3.71"
}

repositories {
    // artifacts are published to JCenter
    jcenter()
}

dependencies {
    implementation(kotlin("stdlib", org.jetbrains.kotlin.config.KotlinCompilerVersion.VERSION))
    implementation("org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.20.0")
}

The official instructions have a buggy version of this: no org.jetbrains.kotlin.config.

However, this is not enough. I was executing "Run" from the Kotlin file. This leads to another error

error: unable to evaluate script, no scripting plugin loaded

due to a nasty bug (as in, I wasted HOURS and HOURS trying to figure out what I was doing wrong) https://youtrack.jetbrains.com/issue/KT-37814

One needs to explicitly execute "Build project".