How to make Gradle add Lombok to its Project and external dependencies libraries? - eclipse

Question

I created a Java project in Eclipse Neon. I used Buildship 1.0.21 to import the project as a Gradle project and ran the wrapper and init commands to generate the build, settings and wrapper files.
The project has an empty source folder because I am trying to solve a similar problem on a more complicated project and taking the divide and conquer approach - just add Lombok dependency.
Here is my build.gradle as instructed on the lombok website:
apply plugin: 'java'
dependencies {
compileOnly "org.projectlombok:lombok:1.16.12"
}
and gradle-wrapper.properties if needed:
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-3.2.1-bin.zip /* <--- tried other versions too */
and I ran the jar file to install it on my eclipse. If I add the jar manually via "Java Build Path" it works but I want Gradle to handle this for me. When I refresh the project nothing happens - there is no lombok jar under "Projects and External Dependencies" and code relying on lombok will give errors.
There is another project I have which does have it there and I don't know what I did differently but I know it's possible.

Answer 1

I managed to solve this after trial and error. The build.gradle file must add the jcenter repository:
repositories {
jcenter()
}
Why this is the case and why this is not mentioned anywhere I don't know. But for now this is what works.