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

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From: Oleg Pykhalov <go.wigust <at> gmail.com>
To: Arun Isaac <arunisaac <at> systemreboot.net>
Cc: ng0 <ng0 <at> infotropique.org>, 28060 <at> debbugs.gnu.org
Subject: [bug#28060] [PATCH] gnu: Add emacs-nixos-mode.
Date: Sat, 12 Aug 2017 21:32:49 +0300

[Message part 1 (text/plain, inline)]

ng0 <ng0 <at> infotropique.org> writes:

…

>> > We have Nix in (gnu packages package-management).
>> > Why do you fetch it again when we could just add
>> > another output to the nix package?
>> 
>> Didn't think about this.  It will not fetch again if sources are same, I
>> guess.  But it will be more proper way for sure.  The problem is that
>> I'm not very familiar with mixing build systems for now.  This bug
>> report probably needs to wait me or somebody else will do it.

…

> Yet another option: inherit the package "nix" and adjust accordingly.

I think this is the best option.

[0001-gnu-Add-emacs-nix-mode.patch (text/x-patch, inline)]

From b69c7020ba88f541666eda41753540e571666607 Mon Sep 17 00:00:00 2001
From: Oleg Pykhalov <go.wigust <at> gmail.com>
Date: Sat, 12 Aug 2017 09:48:53 +0300
Subject: [PATCH] gnu: Add emacs-nix-mode.

* gnu/packages/emacs.scm (emacs-nix-mode): New variable.
---
 gnu/packages/emacs.scm | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/gnu/packages/emacs.scm b/gnu/packages/emacs.scm
index bb5d2349f..e728419a2 100644
--- a/gnu/packages/emacs.scm
+++ b/gnu/packages/emacs.scm
@@ -5226,6 +5226,24 @@ multiplexer.")
 editing RPM spec files.")
     (license license:gpl2+)))
 
+(define-public emacs-nix-mode
+  (package
+    (inherit nix)
+    (name "emacs-nix-mode")
+    (build-system emacs-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'chdir-elisp
+           ;; Elisp directory is not in root of the source.
+           (lambda _
+             (chdir "misc/emacs"))))))
+    (synopsis "Emacs major mode for editing Nix expressions")
+    (description "@code{nixos-mode} provides an Emacs major mode for editing
+Nix expressions.  It supports syntax highlighting, indenting and refilling of
+comments.")
+    (license license:lgpl2.1+)))
+
 (define-public emacs-git-messenger
   (package
     (name "emacs-git-messenger")
-- 
2.14.1

[Message part 3 (text/plain, inline)]

-- 
Best regards,

Oleg.

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