The Nexus 1.0.0-beta-3.1 release brings several new features and enhancements to the already stable beta-2:
See more details here.
The source for Nexus is also available in a public Subversion repository.
If you wish to build the source yourself, use the following profile definition in your settings.xml and be sure to activate it when building Nexus:
<profiles> <profile> <id>sonatype</id> <repositories> <repository> <id>forge</id> <url>http://repository.sonatype.org:8081/ nexus/content/groups/maven-eclipse</url> <snapshots> <enabled>true</enabled> </snapshots> <releases> <enabled>true</enabled> </releases> </repository> </repositories> <pluginRepositories> <pluginRepository> <id>forge</id> <url>http://repository.sonatype.org:8081/ nexus/content/groups/maven-eclipse</url> <snapshots> <enabled>true</enabled> </snapshots> <releases> <enabled>true</enabled> </releases> </pluginRepository> </pluginRepositories> </profile> </profiles>