:wave: anyone using `kotlin-compile-testing` (<Zac...

# serialization

[Dariusz Kuc]

👋 anyone using kotlin-compile-testing (Zac's fork with support for Kotlin 1.8) with kotlinx-serialization?
Trying to compile my auto-generated sources but getting compilation error complaining about Unresolved reference: serializer (from calls on @Serializable classes -> MySerializableClass.serializer()). It kind of looks like the SerializationComponentRegistrar is not applied

val compilationResult = KotlinCompilation().apply {
  jvmTarget = "1.8"
  sources = generatedSources
  inheritClassPath = true
  compilerPluginRegistrars = listOf(SerializationComponentRegistrar())
}.compile()

libs

kotlin = "1.8.0"
kotlinx-coroutines = "1.7.3"
kotlinx-serialization = "1.5.1"

compile-testing = "0.2.1"

[Dariusz Kuc]

that was a bug in the library (fixed in v0.3.0)

[Dariusz Kuc]

👋 trying to update to Kotlin 1.9 but looks like my project can no longer find org.jetbrains.kotlinx.serialization.compiler.extensions.SerializationComponentRegistrar (used in my unit tests through kotlin-compile-testing) - is there something missing? anyone else encountered this problem?

[Dariusz Kuc]

I see it is available here -> https://github.com/JetBrains/kotlin/blob/v1.9.0/plugins/kotlinx-serialization/kotl[…]lization/compiler/extensions/SerializationComponentRegistrar.kt so I'm guessing I probably have some classpath problem

[Dariusz Kuc]

interesting so the issue appears to be with the actual distributions
• old (working) -> https://repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-serialization/1.8.0/kotlin-serialization-1.8.0-gradle76.jar
• new (not working) -> https://repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-serialization/1.9.0/kotlin-serialization-1.9.0-gradle76.jar (or https://repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-serialization/1.9.0/kotlin-serialization-1.9.0-gradle81.jar)
the difference is that NEW (v1.9) versions no longer contain the referenced org.jetbrains.kotlinx.serialization.compiler.extensions.SerializationComponentRegistrar class

*another odd issue is that sources JARs actually DO NOT contain all source files and include only a subset of files

[Zac Sweers]

This? https://github.com/JetBrains/kotlin/blob/master/plugins/kotlinx-serialization/kotlinx-serialization.cli/src/org/jetbrains/kotlinx/serialization/compiler/extensions/SerializationComponentRegistrar.kt

[Dariusz Kuc]

Yeah

[Zac Sweers]

Looks like it’s… there? 😅

[Dariusz Kuc]

Compare contents of jars (linked above)

[Dariusz Kuc]

tried adding the kotlin-serialization-unshaded and kotlin-serialization-compiler-plugin dependencies (which contain the serialization registrar) directly but those fail with NoSuchMethodError implying there are some classpath issues there but nothing obvious pops out (as in all deps show kotlin 1.9) -> https://scans.gradle.com/s/6hmz6vv6eab7s/dependencies?toggled=W1syXSxbMiwxM11d

If anyone has any ideas I'm all ears. Any help would be greatly appreciated