Use Gradle Tooling API

plugin/build.gradle.kts

@@ -1,26 +1,43 @@
+buildscript {
+    configurations.classpath {
+        resolutionStrategy.activateDependencyLocking()
+    }
+}
+
 plugins {
-    `java-gradle-plugin`
     `kotlin-dsl`
-    `maven-publish`
-    kotlin("kapt")
     id("com.github.johnrengelman.shadow")
-    id("org.ysb33r.gradletest")
+    id("org.ajoberstar.stutter")
+}
+apply {
+    plugin("kotlin")
 }
 
 group = "org.nixos"
 version = "1.0.0-SNAPSHOT"
 
 repositories {
-    jcenter()
+    mavenCentral()
+    maven { url = uri("https://repo.gradle.org/gradle/libs-releases") }
+}
+
+dependencyLocking {
+    lockAllConfigurations()
 }
 
 dependencies {
-    implementation(kotlin("stdlib-jdk8"))
-    implementation("org.apache.maven:maven-model:3.6.1")
-    implementation("org.apache.maven:maven-model-builder:3.6.1")
-    implementation("com.squareup.okio:okio:2.2.2")
-    implementation("com.squareup.moshi:moshi:1.8.0")
-    kapt("com.squareup.moshi:moshi-kotlin-codegen:1.8.0")
+    implementation(project(":model"))
+    compileOnly("org.gradle:gradle-tooling-api:${gradle.gradleVersion}")
+    implementation("org.apache.maven:maven-model:latest.release")
+    implementation("org.apache.maven:maven-model-builder:latest.release")
+    implementation("com.squareup.okio:okio:latest.release")
+
+    compatTestImplementation(embeddedKotlin("stdlib-jdk8"))
+    compatTestImplementation(embeddedKotlin("test-junit5"))
+    compatTestImplementation("org.junit.jupiter:junit-jupiter-api:5.4+")
+    compatTestRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.4+")
+    compatTestImplementation(gradleTestKit())
+    compatTestImplementation(project(":model"))
 }
 
 gradlePlugin {
@@ -28,37 +45,46 @@ gradlePlugin {
         register("gradle2nix") {
             id = "org.nixos.gradle2nix"
             displayName = "gradle2nix"
-            description = "Create Nix configurations suitable for reproducible packaging"
+            description = "Expose Gradle tooling model for the gradle2nix tool"
             implementationClass = "org.nixos.gradle2nix.Gradle2NixPlugin"
         }
     }
 }
 
-tasks {
-    gradleTest {
-        versions("5.0", "5.1.1", "5.2.1", "5.3.1", "5.4.1")
-        kotlinDsl = true
+kotlinDslPluginOptions {
+    experimentalWarning.set(false)
+}
+
+stutter {
+    java(8) {
+        compatibleRange("4.5")
     }
-
-    gradleTestGenerator {
-        dependsOn(shadowJar)
-        doLast {
-            file(gradleTest.get().initScript).bufferedWriter().use { out ->
-                out.appendln("""
-                    initscript {
-                        dependencies {
-                            classpath fileTree('file:${buildDir.absolutePath}/libs'.toURI()) {
-                                include '*.jar'
-                            }
-                """.trimIndent())
-
-                out.appendln("""
-                        }
-                    }
-
-                    apply plugin: org.nixos.gradle2nix.Gradle2NixPlugin
-                """.trimIndent())
-            }
-        }
+    java(11) {
+        compatibleRange("5.0")
     }
 }
+
+tasks {
+    withType<Test> {
+        useJUnitPlatform()
+    }
+
+//    gradleTestGenerator {
+//        dependsOn(shadowJar)
+//        doLast {
+//            file(gradleTest.get().initScript).bufferedWriter().use { out ->
+//                out.append("""
+//                    initscript {
+//                        dependencies {
+//                            classpath fileTree('file:${buildDir.absolutePath}/libs'.toURI()) {
+//                                include '*.jar'
+//                            }
+//                        }
+//                    }
+//
+//                    apply plugin: org.nixos.gradle2nix.Gradle2NixPlugin
+//                """.trimIndent())
+//            }
+//        }
+//    }
+}