Can someone tell here how to debug the compiler :pray: ?

# compiler

[betterclever]

Can someone tell here how to debug the compiler 🙏 ?

[shikasd]

You can launch it with in-process flag and -Dorg.gradle.debug=true
From there on it is basically the same as debugging gradle build https://docs.gradle.org/current/userguide/troubleshooting.html#sec:troubleshooting_build_logic

[betterclever]

I tried doing that but the problem is that I want to debug the incremental compiler step but it doesn't work in in-process mode due to
https://github.com/JetBrains/kotlin/blob/master/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerWork.kt#L312

Just trying my way around it.

[betterclever]

Looking more I found that MessageCollector being null is causing this:
https://github.com/JetBrains/kotlin/blob/master/compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/ClasspathRootsResolver.kt#L311