DUE TO SPAM, SIGN-UP IS DISABLED. Goto Selfserve wiki signup and request an account.
...
Maven 3 historically supports only .mvn/extensions.xml . Today, extensions like Mimir prove very useful, and should be real "user wide" as they are totally orthogonal to builds. Maven 3.10.x should support user-wide ${user.hom}/.m2/extensions.xml and system wide ${maven.home}/conf/extensions.xml in same was as Maven 4 does.
Fix settings.xml interpolation
Right now in all of Maven 3.x line settings.xml interpolation seems totally borked.
Ingest Nisse (or support os-detector like properties)
...