bug#41732: New ’package-with-emacs-next’ procedure

[Nicolas Goaziou]

Hello,

Maxim Cournoyer <maxim.cournoyer@gmail.com> writes:

> Perhaps then,
>
> --8<---------------cut here---------------start------------->8---
> guix build -m manifest.scm --with-input=emacs-minimal=emacs-next \
>      --with-input=emacs=emacs-next
> --8<---------------cut here---------------end--------------->8---

Possibly. And then Magit uses emacs-no-x as an input, so we may need to
also add --with-input=emacs-no-x=emacs-next to the command.

I'm just pointing out that the process is not as straightforward as it
might seem. So, it doesn't sound right to simply suggest

  guix build -m manifest.scm --with-input=emacs-minimal=emacs-next

in the manual/cookbook without caution.

Or maybe `package-with-emacs-next' could be more high-level, and handle
all of these cases. I don't know.

Regards,
-- 
Nicolas Goaziou