How do I obtain desire?

There are two ways -- getting a bootstrap script, and manually downloading the dependencies. For the bootstrap script, please follow this URL:
   http://www.feelingofgreen.ru/shared/git/desire/climb.sh

Its proper invocation is discussed in the overview:
   http://www.feelingofgreen.ru/shared/git/desire/doc/overview.html#sec-6.1

If you decide to go the manual dependency chasing route, you'll need following components:
   o alexandria
   o cl-fad
   o executor (*)
   o iterate
   o pergamum (*)
   o semi-precious (*)

Modules marked with a '*' are available via:
   git://git.feelingofgreen.ru/<module-name>