On Tue, Jul 11, 2017 at 11:42:23AM +0200, Danny Milosavljevic wrote:
> With all this "ncurses/fixed" stuff in master, should I make it
> inherit from ncurses/fixed ?

Recently, Mark added the macro (package/inherit) which does the Right
Thing when inheriting from a grafted package:

https://git.savannah.gnu.org/cgit/guix.git/commit/?id=bedba064267490f2d9f7ee44e5ec103aacc82611

There are some recent examples in the commit log.