Can I create a Maven POM-only (BOM) build using the Gradle maven plugin to be deployed to Nexus?

Question

I have a Gradle project which uses Spring\'s dependency management plugin to define a list of dependency versions. I am also using the Maven plugin to deploy the project to

Answer 1

In Gradle 6+ versions, we can use Gradle Java Platform Plugin to publish a maven-bom without many configurations and scripting.

group 'test.platform.simple.bom'
version '1.0.0-SNAPSHOT'

repositories {
    maven {
        mavenCentral()
    }        
}

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

javaPlatform {
    allowDependencies()
}

dependencies {
    constraints {
        api 'cglib:cglib-nodep:3.2.4'
        api 'junit:junit:4.12'
        // runtime 'org.postgresql:postgresql:42.2.5' <-- runtime constraint
        // api project(":core") <-- constraint from local project
        // api platform('com.fasterxml.jackson:jackson-bom:2.9.8') <-- constraint from another platform
    }
}

publishing {
  publications {
    maven(MavenPublication) {
      from components.javaPlatform
    }
  }
}

Dependencies to be managed can be defined under dependencies as api or runtime constraints. Constraints can be utilized to manage dependencies from a local project as well as from another platform/bom. Please note that we need to configure a Maven publication that uses the javaPlatform component to get it published as a maven bom artifact.