gnu: Add packages/ruby-xyz module.

* gnu/packages/ruby-xyz.scm: New file.
* gnu/local.mk: Add gnu/packages/ruby-xyz.scm to the scope.

Change-Id: I1dcf96e800d059ec73dc53490db1743e69985648

gnu/local.mk

@@ -618,6 +618,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/rrdtool.scm			\
   %D%/packages/rsync.scm			\
   %D%/packages/ruby.scm				\
+  %D%/packages/ruby-xyz.scm				\
   %D%/packages/rush.scm				\
   %D%/packages/rust.scm				\
   %D%/packages/rust-apps.scm			\

gnu/packages/ruby-xyz.scm

@@ -0,0 +1,36 @@
+;;; GNU Guix --- Functional package management for GNU
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages ruby-xyz)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix build-system ruby)
+  #:use-module (guix gexp)
+  #:use-module (guix git-download)
+  #:use-module (guix packages)
+  #:use-module (gnu packages))
+
+;;; Commentary:
+;;;
+;;; Please: Try to add new module packages in alphabetic order.
+;;;
+;;; Code:
+
+
+;;;
+;;; Avoid adding new packages to the end of this file. To reduce the chances
+;;; of a merge conflict, place them above in alphabetic order.
+;;;