Continue switching projects to improved dsl: sourceSets and test running

core/reflection.jvm/build.gradle.kts

@@ -1,7 +1,6 @@
 
 import org.gradle.api.tasks.compile.JavaCompile
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-import java.io.File
 
 buildscript {
     repositories {
@@ -20,16 +19,6 @@ apply {
     plugin("com.github.johnrengelman.shadow")
 }
 
-configure<JavaPluginConvention> {
-    sourceSets.getByName("main")?.apply {
-        val srcs = listOf(File(rootDir, "core/reflection.jvm/src"))
-        java.setSrcDirs(srcs)
-    }
-    sourceSets.getByName("test").apply {
-        java.setSrcDirs(emptyList<File>())
-    }
-}
-
 dependencies {
     val compile by configurations
     compile(project(":core:builtins"))
@@ -37,6 +26,11 @@ dependencies {
     compile(protobufLite())
 }
 
+sourceSets {
+    "main" { projectDefault() }
+    "test" {}
+}
+
 tasks.withType<JavaCompile> {
     dependsOn(protobufLiteTask)
 }
@@ -44,5 +38,3 @@ tasks.withType<JavaCompile> {
 tasks.withType<KotlinCompile> {
     dependsOn(protobufLiteTask)
 }
-
-