The `KaptOptions.Builder()` API has an argument for passing options to `javac`, but it expects `Map&...

# kapt

[Gavin Ray]

The KaptOptions.Builder() API has an argument for passing options to javac, but it expects Map<String, String>
Does anyone know how you can pass arguments like --enable-preview which don't have an -flag=X value?

public final class KaptOptions : org.jetbrains.kotlin.base.kapt3.KaptFlags {
   // ...
    public final class Builder public constructor() {
        // ...
        public final val javacOptions: kotlin.collections.MutableMap<kotlin.String, kotlin.String> /* compiled code */

I tried to search Github code usage and dug through hundreds of repos, but I couldn't find a single one which passes an argument like --enable-preview to Kapt

[tapchicoma]

try to pass empty value: javac.put("--enable-preview", "")

[Gavin Ray]

Thank you -- this works! 🙏

[Gavin Ray]

I am going to submit a PR to kotlin-compile-testing library tonight that fixes proper passing of javac arguments to kapt tasks 🙌