I am using some plugins which depend on snapshot versions of other plugins. As I understand, Ivy tries to fetch the newest version of these plugins every time you start grails. If Ivy does not succeed, grails will not start :-(
As I like to develop offline, I am now looking for a way which lets me avoid this behaviour...
You could pull them down and store them on your machine using a local repository and comment out any remote repositories. Here is some documentation. Scroll down to "local resolvers"
来源：https://stackoverflow.com/questions/8391897/grails-working-offline-with-snapshot-dependencies