tried moving protobuf plugin to separate project, but IntelliJ doesn't like it

buildSrc/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
   `kotlin-dsl`
   kotlin("jvm") version "1.5.31"
@@ -20,3 +22,12 @@ dependencies {
   implementation("com.github.node-gradle:gradle-node-plugin:3.1.1")
 
 }
+
+tasks.withType<KotlinCompile>().configureEach {
+  kotlinOptions.freeCompilerArgs += listOf(
+    "-Xopt-in=kotlin.OptIn",
+    "-Xopt-in=kotlin.ExperimentalStdlibApi",
+    "-Xopt-in=kotlin.time.ExperimentalTime",
+    "-Xopt-in=kotlinx.coroutines.ExperimentalCoroutinesApi",
+  )
+}