Hi,

The library file (aar) will not include the transitive dependencies.

For Maven repos, Gradle will download the dependencies using the pom file which will contain the dependencies list.

In our case the pom file does not generate the nested dependencies list. Either you have to specify the dependencies in your project or you’ll have to modify the code to generate a pom file with dependencies included.

publications {
    bar(MavenPublication) {
        groupId getGroupId()
        artifactId getArtificatId()
        version getVersionName()
        artifact("$buildDir/outputs/aar/${getArtificatId()}-release.aar")

        pom.withXml {
            final dependenciesNode = asNode().appendNode('dependencies')
            ext.addDependency = { Dependency dep, String scope ->
                if (dep.group == null || dep.version == null || dep.name == null || dep.name == "unspecified")
                    return // ignore invalid dependencies
                final dependencyNode = dependenciesNode.appendNode('dependency')
                dependencyNode.appendNode('groupId', dep.group)
                dependencyNode.appendNode('artifactId', dep.name)
                dependencyNode.appendNode('version', dep.version)
                dependencyNode.appendNode('scope', scope)
                if (!dep.transitive) {
                    // If this dependency is transitive, we should force exclude all its dependencies them from the POM
                    final exclusionNode = dependencyNode.appendNode('exclusions').appendNode('exclusion')
                    exclusionNode.appendNode('groupId', '*')
                    exclusionNode.appendNode('artifactId', '*')
                } else if (!dep.properties.excludeRules.empty) {
                    // Otherwise add specified exclude rules
                    final exclusionNode = dependencyNode.appendNode('exclusions').appendNode('exclusion')
                    dep.properties.excludeRules.each { ExcludeRule rule ->
                        exclusionNode.appendNode('groupId', rule.group ?: '*')
                        exclusionNode.appendNode('artifactId', rule.module ?: '*')
                    }
                }
            }
            // List all "compile" dependencies (for old Gradle)
            configurations.compile.getDependencies().each { dep -> addDependency(dep, "compile") }
            // List all "api" dependencies (for new Gradle) as "compile" dependencies
            configurations.api.getDependencies().each { dep -> addDependency(dep, "compile") }
            // List all "implementation" dependencies (for new Gradle) as "runtime" dependencies
            configurations.implementation.getDependencies().each { dep -> addDependency(dep, "runtime") }
        }
    }
}

Check the below link for more details on the code for generating pom file with dependencies.

Publish an Android library to Maven with aar and source jar