Could not find kotlin-gradle-plugin for Kotlin script Gradle - kotlin

Question

build fails, classpath error:
thufir#dur:~/NetBeansProjects/kotlinShadowJar$
thufir#dur:~/NetBeansProjects/kotlinShadowJar$ gradle clean
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring root project 'kotlinShadowJar'.
> Could not resolve all files for configuration ':classpath'.
> Could not find org.jetbrains.kotlin:kotlin-gradle-plugin:.
Searched in the following locations:
file:/home/thufir/.gradle/caches/4.3.1/embedded-kotlin-repo-1.1.51-1/repo/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.pom
file:/home/thufir/.gradle/caches/4.3.1/embedded-kotlin-repo-1.1.51-1/repo/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.jar
https://repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.pom
https://repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.jar
https://repo.gradle.org/gradle/repo/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.pom
https://repo.gradle.org/gradle/repo/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.jar
Required by:
project :
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
* Get more help at https://help.gradle.org
BUILD FAILED in 1s
cat build.gradle.kts:
import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
buildscript {
repositories {
mavenCentral()
gradleScriptKotlin()
}
dependencies {
classpath(kotlinModule("gradle-plugin"))
classpath("com.github.jengelman.gradle.plugins:shadow:1.2.3")
}
}
apply {
plugin("kotlin")
plugin("com.github.johnrengelman.shadow")
}
repositories {
mavenCentral()
}
val shadowJar: ShadowJar by tasks
shadowJar.apply {
manifest.attributes.apply {
put("Implementation-Title", "Gradle Jar File Example")
put("Implementation-Version" version)
put("Main-Class", "com.mkyong.DateUtils")
}
baseName = project.name + "-all"
}
The buildfile was a direct copy of a working build. The context is getting started with Kotlin script Gradle. So far as I can tell the script should be good.
Note that I'm not using intelli-J, this is strictly from the CLI with Kotlin script Gradle.
perhaps it's something quite simple, like "plugin" versus "plugins"...

Answer 1

Looking at the error logs, you can see the plugin version request:
Searched in the following locations:
file:/home/thufir/.gradle/caches/4.3.1/embedded-kotlin-repo-1.1.51-1/repo/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.pom
file:/home/thufir/.gradle/caches/4.3.1/embedded-kotlin-repo-1.1.51-1/repo/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.jar
https://repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.pom
https://repo1.maven.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.jar
https://repo.gradle.org/gradle/repo/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.pom
https://repo.gradle.org/gradle/repo/org/jetbrains/kotlin/kotlin-gradle-plugin//kotlin-gradle-plugin-.jar
You can see that a version is not requested on each plugin request because they are looking for kotlin-gradle-plugin-.jar.
If you look at the source, you will also see that kotlinModule is deprecated.
I would recommend a few different changes to improve the build script:
Using the Gradle wrapper (./gradlew
Specify a version for your kotlinModule until you upgrade your Gradle version - kotlinModule("gradle-plugin", "1.1.51")
Use the plugins {} block instead of buildscript for plugins