Use gradle to upload jar to local Maven repository

I suspect the problem is that you are only editing the POM (via pom.project), instead of configuring the actual Maven coordinates used for installation. Try the following instead:

// best way to set group ID
group = 'com.example'

install {
    repositories.mavenInstaller {
        // only necessary if artifact ID diverges from project name
        // the latter defaults to project directory name and can be
        // configured in settings.gradle
        pom.artifactId = 'myName' 
        // shouldn't be needed as this is the default anyway
        pom.packaging = 'jar'
    }
}

PS: The samples directory in the full Gradle distribution contains many example builds, also for the maven plugin.