Maven Integration documentation says GRAILS_HOME does not need to be set if using Maven to build. But for 1.2-M3 -era maven builds, there are a lot of nasty looking log output if you dont set GRAILS_HOME i.e.: :::::::::::::::::::::::::::::::::::::::::::::: :: FAILED DOWNLOADS :: :: ^ see resolution messages for details ^ :: :::::::::::::::::::::::::::::::::::::::::::::: :: javax.servlet#servlet-api;2.5!servlet-api.jar :: javax.servlet#jsp-api;2.1!jsp-api.jar :: javax.servlet#jstl;1.1.2!jstl.jar :::::::::::::::::::::::::::::::::::::::::::::: If I have $GRAILS_HOME set to 1.2-M3 then these go away..