I’m a Software Engineer and I develop in my free time Free Software mainly in Ada.
I use GNU Emacs for almost everything including reading mails (with gnus) or chatting (with emacs-jabber)
I have written require-or-install.el see [1]
Bienvenue sur le wiki !! If you don’t allready know this pages have a look at InstallElisp InstallingPackages ELPA which I think are somehow related to your require-or-install.el.