* guix/import/egg.scm (egg->guix-package): Generate dependency list from
a list of symbols.
[egg-parse-dependency]: Return a list of symbols.
[maybe-inputs]: Wrap INPUTS in 'list' instead of 'quasiquote'.
* tests/egg.scm (match-chicken-foo): Adjust accordingly.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>