bug#27686: emacs-ess: Not installed in "${output}/share/emacs/site-lisp/guix.d"

[Alex Kost <alezost@gmail.com>]

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Adonay Felipe Nogueira (2017-07-13 09:20 -0300) wrote:

> It seems that Emacs ESS mode isn't installed in the same location as
> other packages are.
>
> Also note that emacs-ess doesn't use the Emacs build system. I don't
> know if this is indeed the issue (and if we can force it to use such
> build system), but I think this is an important note to make.

It's not a problem: we just need to install *.el files in
".../share/emacs/site-lisp/guix.d/ess" instead of
".../share/emacs/site-lisp/ess" as it is done by default.  The attached
patch should fix it.

A side note: this is one of the reasons why I don't like "guix.d"
sub-directory.  I think it is a useless extra level in the file
hierarchy.  If we used:

  .../share/emacs/site-lisp/<package>

instead of the current choice:

  .../share/emacs/site-lisp/guix.d/<package>

there would be no need to adjust 'emacs-ess', 'magit' and probably some
other packages to install *.el in "guix.d".  But this is for another
discussion :-), sorry:

  http://lists.gnu.org/archive/html/guix-devel/2016-05/msg00241.html


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From 2b36a9a5de44d162b39b351c49ec2f35c8cab880 Mon Sep 17 00:00:00 2001
From: Alex Kost <alezost@gmail.com>
Date: Tue, 18 Jul 2017 16:44:22 +0300
Subject: [PATCH] gnu: emacs-ess: Install elisp files in "guix.d".

Fixes <http://bugs.gnu.org/27686>.
Reported by Adonay Felipe Nogueira <adfeno@openmailbox.org>

* gnu/packages/emacs.scm (emacs-ess)[arguments]: Add LISPDIR to make
flags to install *.el files into "guix.d" sub-directory.
---
 gnu/packages/emacs.scm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/emacs.scm b/gnu/packages/emacs.scm
index 75122af8b..a4cf5afcb 100644
--- a/gnu/packages/emacs.scm
+++ b/gnu/packages/emacs.scm
@@ -3105,7 +3105,9 @@ E-Prime forbids the use of the \"to be\" form to strengthen your writing.")
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f ; There is no test suite.
-       #:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out")))
+       #:make-flags (list (string-append "PREFIX=" %output)
+                          (string-append "LISPDIR=" %output
+                                         "/share/emacs/site-lisp/guix.d/ess"))
        #:phases
        (modify-phases %standard-phases
          (delete 'configure)
-- 
2.13.2