Gradle, intelliJ, kotlin, java chores

Author: benedekh

.gitignore

@@ -39,4 +39,7 @@ bin/
 .vscode/
 
 ### Mac OS ###
-.DS_Store
+.DS_Store
+
+### Kotlin ###
+.kotlin/errors/

.idea/detekt.xml

@@ -22,7 +22,7 @@ All submissions need to be reviewed before being merged. When you are ready with
 ## Recommended setup
 
 1. Install Git and configure your GitHub access.
-2. Install a Java SDK (e.g. [Eclipse Temurin](https://adoptium.net/temurin/releases)) with compliance level Java 11 at least.
+2. Install a Java SDK (e.g. [Eclipse Temurin](https://adoptium.net/temurin/releases)) with compliance level Java 17 at least.
    - Set the `JAVA_HOME` environment variable to the installation directory of the Java SDK.
 3. Install [IntelliJ IDEA](https://www.jetbrains.com/idea/download/) (Community Edition is enough).
 4. Install the [detekt plugin](https://plugins.jetbrains.com/plugin/10761-detekt) in IntelliJ.
@@ -40,7 +40,7 @@ All submissions need to be reviewed before being merged. When you are ready with
       4. unselect all packages in the `Import Layout` list.
 6. Clone the repository and open it in IntelliJ.
 7. Make sure to use the Java SDK you installed in step 2. Set it in `File -> Project Structure -> Project -> Project SDK`.
-8. Make sure to use Java 11 as the language level. Set it in `File -> Project Structure -> Project -> Project language level`.
+8. Make sure to use Java 17 as the language level. Set it in `File -> Project Structure -> Project -> Project language level`.
 9. Develop your code.
 10. Build and test the project with `./gradlew build` (or `gradlew.bat build` on Windows).
 11. Fix any findings of the static code analysis tool (detekt).
@@ -49,11 +49,18 @@ All submissions need to be reviewed before being merged. When you are ready with
 ## Alternative setup
 
 1. Install Git and configure your GitHub access.
-2. Install a Java SDK (e.g. [Eclipse Temurin](https://adoptium.net/temurin/releases)) with compliance level Java 11 at least.
+2. Install a Java SDK (e.g. [Eclipse Temurin](https://adoptium.net/temurin/releases)) with compliance level Java 17 at least.
     - Set the `JAVA_HOME` environment variable to the installation directory of the Java SDK.
 3. Install [Gradle](https://gradle.org/install/).
 4. Clone the repository and open it in your favourite IDE.
 5. Develop your code.
 6. Build and test the project with `./gradlew build` (or `gradlew.bat build` on Windows).
 7. Fix any findings of the static code analysis tool (detekt). 
-8. Fix any failing tests.
+8. Fix any failing tests.
+
+
+## Troubleshooting
+
+## Gradle: "Could not connect to Kotlin compile daemon"
+
+If you experience `Could not connect to Kotlin compile daemon` while running Gradle build by the Gradle plugin in intelliJ, then run `./gradle build` and the other Gradle commands via the CLI. 

.idea/gradle.xml

@@ -1,10 +1,7 @@
-import org.gradle.api.tasks.testing.logging.TestExceptionFormat
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-
 plugins {
     kotlin("jvm") version "2.1.21"
     kotlin("plugin.serialization") version "2.1.21"
-    id("io.gitlab.arturbosch.detekt") version ("1.23.1")
+    id("io.gitlab.arturbosch.detekt") version ("1.23.8")
     id("jacoco")
     id("org.jetbrains.dokka") version "2.0.0"
     id("maven-publish")
@@ -20,9 +17,9 @@ repositories {
     mavenLocal()
 }
 
-val ktorVersion by extra { "2.3.3" }
-val detektVersion by extra { "1.23.1" }
-val kotestVersion by extra { "5.6.2" }
+val ktorVersion by extra { "2.3.13" }
+val detektVersion by extra { "1.23.8" }
+val kotestVersion by extra { "5.9.1" }
 
 dependencies {
     detektPlugins("io.gitlab.arturbosch.detekt:detekt-formatting:$detektVersion")
@@ -47,12 +44,19 @@ tasks.test {
     testLogging {
         events("skipped", "failed")
         showStackTraces = true
-        exceptionFormat = TestExceptionFormat.FULL
+        exceptionFormat = org.gradle.api.tasks.testing.logging.TestExceptionFormat.FULL
     }
 }
 
-tasks.withType<KotlinCompile> {
-    kotlinOptions.jvmTarget = "11"
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
+}
+kotlin {
+    compilerOptions {
+        jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17
+    }
 }
 
 val sourcesJar by tasks.registering(Jar::class) {