more prep for included-build Gradle plugins

gradle-plugins/settings-plugins/build.gradle.kts

@@ -7,14 +7,20 @@ plugins {
 
 val gradleJvmTarget = "11"
 
+dependencies {
+  // This project should only be providing simple plugins for configuring Gradle without
+  // dependencies. Try to avoid setting dependencies here, else the Gradle script classpath might
+  // get polluted and messy.
+}
+
 kotlin {
   jvmToolchain {
     (this as JavaToolchainSpec).languageVersion.set(JavaLanguageVersion.of(gradleJvmTarget))
   }
+}
 
-  kotlinDslPluginOptions {
-    jvmTarget.set(gradleJvmTarget)
-  }
+kotlinDslPluginOptions {
+  jvmTarget.set(gradleJvmTarget)
 }
 
 tasks.withType<KotlinCompile>().configureEach {

gradle-plugins/settings-plugins/src/main/kotlin/kafkatorio/convention/settings/repositories.kt

@@ -75,3 +75,12 @@ fun RepositoryHandler.gitHub() {
     }
   }
 }
+
+
+fun RepositoryHandler.kotlinxHtml() {
+  maven("https://maven.pkg.jetbrains.space/public/p/kotlinx-html/maven") {
+    mavenContent {
+      includeGroup("org.jetbrains.kotlinx")
+    }
+  }
+}

gradle-plugins/settings-plugins/src/main/kotlin/kafkatorio/convention/settings/repositories.settings.gradle.kts

@@ -2,14 +2,7 @@ package kafkatorio.convention.settings
 
 @Suppress("UnstableApiUsage") // Central declaration of repositories is an incubating feature
 dependencyResolutionManagement {
-
-  // https://github.com/gradle/gradle/issues/15754#issuecomment-763614651
-  // https://github.com/gradle/gradle/blob/09fcaacc9848f09aa584b4119be9271bee6916e6/build-logic/build-logic-base/settings-plugin/src/main/kotlin/gradlebuild.repositories.settings.gradle.kts#L68
-
-  // Cannot use 'FAIL_ON_PROJECT_REPOS' because
-  // - the 'gradle-guides-plugin' adds a repo (which it should not do)
-  // - the 'kotlin-gradle-plugin' adds a repo (and removes it afterwards) to download NodeJS
-//  repositoriesMode.set(RepositoriesMode.PREFER_SETTINGS)
+  repositoriesMode.set(RepositoriesMode.PREFER_SETTINGS)
 
   repositories {
     myMavenLocal()
@@ -25,9 +18,7 @@ dependencyResolutionManagement {
       content { includeGroup("dev.adamko.kotka") }
     }
 
-    maven("https://maven.pkg.jetbrains.space/public/p/kotlinx-html/maven") {
-      content { includeGroup("org.jetbrains.kotlinx") }
-    }
+    kotlinxHtml()
 
     sonatypeSnapshot()
   }