add neovim package with deps (#5260)

* add neovim package with deps

var/spack/repos/builtin/packages/lua-mpack/package.py

@@ -0,0 +1,44 @@
+##############################################################################
+# Copyright (c) 2013-2017, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/llnl/spack
+# Please also see the NOTICE and LICENSE files for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, February 1999.
+#
+# This program 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 terms and
+# conditions of the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+
+from spack import *
+
+
+class LuaMpack(Package):
+    """lua bindings to libmpack"""
+
+    homepage = "https://luarocks.org/modules/tarruda/mpack"
+    url      = "https://luarocks.org/manifests/tarruda/mpack-1.0.6-0.src.rock"
+
+    depends_on('msgpack-c')
+
+    version('1.0.0-0', '9a7bd842753194124830bc7426e78c1b',
+            url='https://luarocks.org/manifests/tarruda/mpack-1.0.6-0.src.rock',
+            expand=False)
+
+    extends('lua')
+
+    def install(self, spec, prefix):
+        luarocks('--tree=' + prefix, 'install', 'mpack-1.0.6-0.src.rock')