How can I create a Kotlin project that is being built using Gradle?

Question

I am trying to create a new Kotlin project that builds using Gradle using IntelliJ IDEA (2016.2.5 on Ubuntu 16.04). When I do this, I immediately get an error message.

Here is what I am trying:

• Select "Create New Project" on the welcome screen.

• Select "Gradle" from the left pane, "Kotlin (Java)" to the right. Click "Next."

• Enter "hello-world" as ArtifactId. Click "Next."

• Make sure that "Create a separate module from the source set" and "Use the default shell Gradle" is selected, nothing more. Click "Next."

• Use the default values ​​for the name and location of the project. Click Finish.

Then I immediately get this error:

Gradle 'hello-world' project refresh failed

Error: Could not find org.jetbrains.kotlin:kotlin-gradle-plugin:1.1-M02-12.
       Searched in the following locations:
           https://repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.1-M02-12/kotlin-gradle-plugin-1.1-M02-12.pom
           https://repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.1-M02-12/kotlin-gradle-plugin-1.1-M02-12.jar
       Required by:
           :hello-world:unspecified

The generated one is build.gradleas follows:

version '1.0-SNAPSHOT'

buildscript {
    ext.kotlin_version = '1.1-M02-12'

    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

apply plugin: 'kotlin'

repositories {
    mavenCentral()
}

dependencies {
    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
}

How can I properly create a Kotlin project that builds with Gradle?

Answer 1

In yours, build.gradlechange ext.kotlin_versionas follows:

 ext.kotlin_version = '1.1-M02'

^{It is a small mistake that the IDE plugin puts its own version in build scripts, not the Kotlin version.}

And also add the 1.1 EAP repository to repositoriesboth in buildscriptand in the root area:

repositories {
    // ...
    maven { url "http://dl.bintray.com/kotlin/kotlin-eap-1.1" }
}

^{Kotlin artifacts related to EAP versions are not placed in Maven Central, as in public versions, and this repository is not automatically added to the generated build script.}

Gradle, .

build.gradle .