Sébastien Vauban wrote:

> I've completely avoided that problem by using a `try-require'
> function: if the package is not installed, it'll just go on as
> if nothing happened.

Why not just using locate-library to require the package only if it's
installed and locatable? There are plenty of sentences like this in my
.emacs:

(when (locate-library "muttrc")
  (require 'muttrc))

Cordially, Ismael
-- 
Dropping science like when Galileo dropped his orange