[bug#28060] [PATCH] gnu: Add emacs-nixos-mode.

[Arun Isaac]

Thanks for the patch!

Oleg Pykhalov writes:

> +(define-public emacs-nixos-mode
> +  (package
> +    (name "emacs-nixos-mode")
> +    (version "1.11.13")

misc/emacs/nix-mode.el says the version number is 1.0. This contradicts
the release version number 1.11.13. But, I guess we can go with the
release version number.

> +    (arguments
> +     `(#:phases
> +       (modify-phases %standard-phases
> +         (add-after 'unpack 'chdir-elisp
> +           (lambda _
> +             (chdir "misc/emacs"))))))

It is kinda obvious, but do add a short comment explaining why we are
changing directory.

> +    (synopsis "Emacs major mode for editing Nix expressions")
> +    (description "@code{nixos-mode} provides an Emacs major mode for editing
> +Nix expressions.")

Could you add the following line to the description?

"It supports syntax highlighting, indenting and refilling of comments."

I have taken the above sentence from
https://github.com/NixOS/nix/blob/master/misc/emacs/README

> +    (license license:gpl3+)))

Nix is under the LGPL 2.1 license. So, nix-mode should also be under the
same license, right?

Could you send an updated patch? Thanks!