emacs: Add 'guix-devel-build-package-source'.

Suggested by Ludovic Courtès <ludo@gnu.org>.

* guix/scripts.scm (build-package-source): New procedure.
* emacs/guix-devel.el (guix-devel-build-package-source): New command.
  (guix-devel-keys-map): Add key binding for it.
* doc/emacs.texi (Emacs Development): Document it.

1 files changed, 6 insertions, 0 deletions

diff --git a/doc/emacs.texi b/doc/emacs.texi
index 325e14e2a48..ab695159728 100644
--- a/doc/emacs.texi
+++ b/doc/emacs.texi
@@ -667,6 +667,12 @@ this command---for example, with @kbd{C-M-x} (@pxref{To eval or not to
 eval,,, geiser, Geiser User Manual})
 (@code{guix-devel-build-package-definition}).
 
+@item C-c . s
+Build a source derivation of the package defined by the current variable
+definition.  This command has the same meaning as @code{guix build -S}
+shell command (@pxref{Invoking guix build})
+(@code{guix-devel-build-package-source}).
+
 @item C-c . l
 Lint (check) a package defined by the current variable definition
 (@pxref{Invoking guix lint}) (@code{guix-devel-lint-package}).