Once Chicken 6 gets released, we can just adjust the URL in the ‘egg-uri’
procedure, instead of having to change the URL for all the Chicken packages.
Making things a little more future-proof.
* guix/build-system/chicken.scm (egg-uri): New procedure.
* guix/import/egg.scm (egg-source-url): Adjust accordingly.
(egg->guix-package): Likewise.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>