How to use it?

Simplest way to use Mímir is with Maven 4, it supports user wide extensions. Just create ~/.m2/extensions.xml with following content (adjust Mímir version as needed):

<?xml version="1.0" encoding="UTF-8"?>
<extensions>
    <extension>
        <groupId>eu.maveniverse.maven.mimir</groupId>
        <artifactId>extension</artifactId>
        <version>0.4.1</version>
    </extension>
</extensions>

Using it with Maven 3 is also possible and completely fine and compatible, but there you will need to set up per-project extensions in .mvn/extensions.xml file instead of one user-wide one.

One extra step is needed, in case you have non-trivial networking (like Docker, Tailscale or alike): you need to “help” a bit to JGroups, to figure out which networking interface belongs to your LAN. To achieve that, you need to create ~/.mimir/daemon.properties file with following content (use your LAN IP address):

mimir.jgroups.interface=match-address\:192.168.1.*

This will help JGroups to properly bind to interface that is used on your LAN.

With these, you are fully set up. Now just go and fire up a Maven or Maven Daemon build.