Since using the maven-archetype-plugin with version 3.0.0 the plugin tries to connect to both our internal nexus and to http://repo.maven.apache.org for downloading Maven artifacts used by Archetypes. Since we are using a proxy, the generation of the archetype is delayed until the download of the Maven artifacts times out.
We'd expect the archetype to only contact our own artifact repository, without trying to connect to http://repo.maven.apache.org at all.
I've attached a snippet with the debug output of the archetype:generate goal and the configuration of our mirror.
We assume this problem is related to