update to tutteli gradle 5.0.0, make kotlin version configurable

moreover:
- add the missing pieces so that we can actually release minimalist,
  such as developer information

gradle/build-logic/build-parameters/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
+
 plugins {
     id("build-logic.kotlin-dsl-gradle-plugin")
     id("org.gradlex.build-parameters") version "1.4.3"
@@ -13,14 +15,14 @@ buildParameters {
     integer("defaultJdkVersion") {
         defaultValue.set(defaultJdkVersion)
         mandatory.set(true)
-        description.set("Default Java version for source and target compatibility")
+        description.set("Default jdk version for source and target compatibility")
     }
 
-    group("kotlin") {
-        integer("version") {
+	group("kotlin") {
+        string("version") {
             fromEnvironment()
-            defaultValue.set(defaultJdkVersion)
-            description.set("kotlin version")
+            defaultValue.set(KotlinVersion.KOTLIN_1_9.version)
+            description.set("kotlin version used for apiVersion and languageVersion")
         }
         bool("werror") {
             defaultValue.set(true)

gradle/build-logic/dev/build.gradle.kts

@@ -9,6 +9,6 @@ dependencies {
     api("org.jetbrains.dokka:dokka-base:1.8.20")
     api("org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.10")
 
-    api("ch.tutteli.gradle.plugins.junitjacoco:ch.tutteli.gradle.plugins.junitjacoco.gradle.plugin:4.10.0")
-    api("ch.tutteli.gradle.plugins.kotlin.module.info:ch.tutteli.gradle.plugins.kotlin.module.info.gradle.plugin:4.10.0")
+    api("ch.tutteli.gradle.plugins.junitjacoco:ch.tutteli.gradle.plugins.junitjacoco.gradle.plugin:5.0.0")
+    api("ch.tutteli.gradle.plugins.kotlin.module.info:ch.tutteli.gradle.plugins.kotlin.module.info.gradle.plugin:5.0.0")
 }

gradle/build-logic/dev/src/main/kotlin/build-logic.kotlin-conventions.gradle.kts

@@ -1,22 +1,29 @@
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompilationTask
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-    id("build-logic.junit-jacoco-conventions")
-    // this plugin sets inter alia toolchain and source/targetCompatibility
-    // but also applies common plugins such as gradle-convention, build-params
-    id("build-logic.java")
+	id("build-logic.junit-jacoco-conventions")
+	// this plugin sets inter alia toolchain and source/targetCompatibility
+	// but also applies common plugins such as gradle-convention, build-params
+	id("build-logic.java")
 }
 
 tasks.configureEach<KotlinCompile> {
-    kotlinOptions {
-        jvmTarget = buildParameters.defaultJdkVersion.toString()
-    }
+	kotlinOptions {
+		jvmTarget = buildParameters.defaultJdkVersion.toString()
+		languageVersion
+	}
 }
 
 tasks.configureEach<KotlinCompilationTask<*>> {
-    compilerOptions {
-        // suppress warnings about kotlin 1.4 beeing deprecated
-        freeCompilerArgs.add("-Xsuppress-version-warnings")
-    }
+	compilerOptions {
+		freeCompilerArgs.add("-opt-in=kotlin.RequiresOptIn")
+		// suppress warnings about used kotlin version being deprecated, we use an older api/language version on purpose
+		freeCompilerArgs.add("-Xsuppress-version-warnings")
+
+		val kotlinVersion = KotlinVersion.fromVersion(buildParameters.kotlin.version)
+		languageVersion.set(kotlinVersion)
+		apiVersion.set(kotlinVersion)
+	}
 }

gradle/build-logic/dev/src/main/kotlin/build-logic.kotlin-jvm.gradle.kts

@@ -6,9 +6,3 @@ plugins {
 dependencies {
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit5")
 }
-
-kotlin {
-    sourceSets {
-        configureLanguageSettings()
-    }
-}

gradle/build-logic/publishing/build.gradle.kts

@@ -9,6 +9,6 @@ dependencies {
     api("org.jetbrains.dokka:org.jetbrains.dokka.gradle.plugin:1.8.20")
     api("org.jetbrains.dokka:dokka-base:1.8.20")
 
-    api("ch.tutteli.gradle.plugins.dokka:ch.tutteli.gradle.plugins.dokka.gradle.plugin:4.10.0")
-    api("ch.tutteli.gradle.plugins.publish:ch.tutteli.gradle.plugins.publish.gradle.plugin:4.10.0")
+    api("ch.tutteli.gradle.plugins.dokka:ch.tutteli.gradle.plugins.dokka.gradle.plugin:5.0.0")
+    api("ch.tutteli.gradle.plugins.publish:ch.tutteli.gradle.plugins.publish.gradle.plugin:5.0.0")
 }

gradle/build-logic/publishing/src/main/kotlin/build-logic.dokka.gradle.kts

@@ -1,5 +1,5 @@
+import ch.tutteli.gradle.plugins.dokka.GhPages
 import org.jetbrains.dokka.gradle.AbstractDokkaLeafTask
-import org.jetbrains.dokka.gradle.DokkaTask
 
 plugins {
     id("build-logic.gradle-conventions")
@@ -8,21 +8,15 @@ plugins {
 
 val kdocDir = rootProject.projectDir.resolve("misc/kdoc")
 
-tasks.configureEach<DokkaTask> {
-    dokkaSourceSets.configureEach {
-        reportUndocumented.set(true)
-    }
-}
-
 tutteliDokka {
     githubUser.set("tegonal")
-	modeSimple.set(false)
+	writeTo.set(GhPages)
 }
 
 tasks.configureEach<AbstractDokkaLeafTask> {
     dokkaSourceSets.configureEach {
+		reportUndocumented.set(true)
         jdkVersion.set(buildParameters.defaultJdkVersion)
-        //TODO also set kotlin version
         includes.from(kdocDir.resolve("packages.md"))
     }
     configurePlugins()

gradle/build-logic/publishing/src/main/kotlin/build-logic.published-kotlin-jvm.gradle.kts

@@ -1,12 +1,21 @@
 plugins {
-    id("build-logic.kotlin-jvm")
+	id("build-logic.kotlin-jvm")
 	id("build-logic.dokka")
 	id("ch.tutteli.gradle.plugins.kotlin.module.info")
-    id("ch.tutteli.gradle.plugins.publish")
+	id("ch.tutteli.gradle.plugins.publish")
 }
 
 tutteliPublish {
 	githubUser.set("tegonal")
-    resetLicenses("EUPL-1.2")
-}
+	manifestVendor.set("Tegonal Genossenschaft")
 
+	resetLicenses("EUPL-1.2")
+	addDeveloper {
+		id = "robstoll_tegonal"
+		name = "Robert Stoll"
+		email = "robert.stoll@tegonal.com"
+		url = "https://tutteli.ch"
+		organization = "Tegonal Genossenschaft"
+		organizationUrl = "https://tegonal.com"
+	}
+}