I'm going to drop maintainership of app-misc/gcal due to lack of
interest. Does someone want to take it? Otherwise, it will fall back
to the shell-tools herd. Apart from one open stable request, there are
no open bugs.
Upstream situation for this package is a bit unclear: There's version
3.6* on gnu.org. On the other hand, the original author has announced
(but not released?) version 4.00 some time ago.