→4. Install Umlaut
svn checkout svn+ssh://(developername)@rubyforge.org/var/svn/umlaut/U2 ./Umlaut
Umlaut comes with a number of Ruby gems and Rails plugins "frozen" into it's distribution, in vendor/plugins. You do not need to install these, they come with Umlaut. These include: ferret; oai; ruby-json; sru; xisbn; acts_as_ferret; enumerations_mixin ; app_config (plugin); isbn-tools (plugin) ; openurl ( svn external link in plugin; needs to be fixed to link to a specific tag )
However, there are a few plugins that can not be conveniently packaged with Umlaut, you need to install them yourself...