Gradle maven-publish plugin produces pom with no dependencies

Question

I have a project which has a SharedCode (Java) module and secondly an Android (Android library) module which depends on the SharedCode module. I've previously been using the maven plugin in my build.gradle files and I've been using the uploadArchives task of that plugin to publish the artifacts from my two modules. This has worked and produced pom files which reflect the dependencies in my build.gradle files.

I thought I'd replace the old maven plugin with the new maven-publish plugin. However, I see that the pom files produced by the maven-publish plugin contain no dependencies. Is this by design, is this a bug in the plugin or am I using the plugin incorrectly?

The build.gradle file in my SharedCode module is as follows:

apply plugin: 'java'
apply plugin: 'maven-publish'

group = "${projectGroupId}"
version = "${projectVersionName}"

dependencies {
    compile 'com.google.guava:guava:18.0'
}

publishing {
    publications {
        SharedCode(MavenPublication) {
            groupId "${projectGroupId}"
            artifactId 'SharedCode'
            version "${projectVersionName}"
            artifact("$buildDir/libs/SharedCode-${projectVersionName}.jar")
        }
    }
}

The build.gradle file in my Android module is as follows:

apply plugin: 'com.android.library'
apply plugin: 'maven-publish'

group = "${projectGroupId}"
version = "${projectVersionName}"

android {
    // android stuff here...
}

dependencies {
    compile project(':SharedCode')
}

publishing {
    publications {
        Android(MavenPublication) {
            groupId "${projectGroupId}"
            artifactId 'Android'
            version "${projectVersionName}"
            artifact "$buildDir/outputs/aar/Android-release.aar"
        }
    }
}

The pom file created from the SharedCode module is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
        http://maven.apache.org/xsd/maven-4.0.0.xsd"
        xmlns="http://maven.apache.org/POM/4.0.0"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

    <modelVersion>4.0.0</modelVersion>
    <groupId>com.mycompany.sdk</groupId>
    <artifactId>SharedCode</artifactId>
    <version>0.0.2</version>

</project>

The pom file created from the Android module is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
        http://maven.apache.org/xsd/maven-4.0.0.xsd"
        xmlns="http://maven.apache.org/POM/4.0.0"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

    <modelVersion>4.0.0</modelVersion>
    <groupId>com.mycompany.sdk</groupId>
    <artifactId>Android</artifactId>
    <version>0.0.2</version>
    <packaging>aar</packaging>

</project>

Note the absence of the dependencies in the pom files.

Answer 1

Use from components.java instead of the artifact... line in your publications section for the java project. That should produce the dependencies in the pom automatically.

The android project isn't recognized as a standard java project, which makes it a bit trickier. You can create your own dependencies section using pom.withXml {} and then iterating through your dependency list. Alternatively, there is this gradle plugin that does it for yout.