For compilation, you need :
- JDK 6 (Sun JDK or OpenJDK Highlight recommanded)
- Install Maven 3
- Check out and install Bukkit and CraftBukkit
- Check out this repo
- Get the Permissions plugin jar and run
mvn install:install-file -Dfile=Permissions.jar -DgroupId=org.bukkit -DartifactId=permissions -Dversion=2.0 -Dpackaging=jar mvn clean install