The dev-lisp/cl-defsystem3-r1 ebuild refers to a non-existant package on the source FTP server. The snapshot from 2003-04-30 was supplanted by one from 2003-12-05. I updated affected files in the ebuild and have attached the fixes.
Created attachment 24867 [details] Fixed ebuild files
fixed in cl-defsystem3-3.3i-r3