using kotlinx serialization inside a gradle plugin that creates a gradle task - kotlin

Question

I am trying to create a gradle plugin that will generate files (serialized from data classes) from a gradle task that can run in another project.
lets say that the classes that I am serializing are marked with some annotation #Annot and I find all the relevant classes with reflection in the gradle task (I made sure to depend on kotlin compile so that the binaries are created). The problem is that when I try to use
val clazz: Class<*>
clazz.kotlin.serializer()
I get a Serializer for class 'Type' is not found. (Type is the actual class that I found and is annotated with #Serializable and #Annot .
I am using gradle version 7.2, kotlin 1.5.21 (tried with 1.5.31 too)
The project that uses the plugin has a kotlinx serialization plugin enabled
What am I missing? why can’t I access the class serializer with the gradle task?
Note* if I run the above code in the target project (and not in the plugin then the serializer() function doesn't throw an exception

Answer 1

So This didn't work in a the way I wanted it to but I found a way to make it work.
I defined a task that extends JavaExec task:
tasks.create(createFilesTaskName, JavaExec::class.java) {
mainClass.set("package.of.file.SchemaKt")
classpath = sourceSets.getByName("main").runtimeClasspath
group = groupName
}
The code in SchemaKt is in the source set of my kotlin sources or alternatively in a package required by the current project.
The serializer() is accessible and working from there and I can run the schemas creation from a gradle task which is exactly what I needed.
I hope this helps someone in the future.