add package notmuch and dependencies (#3329)

* add package notmuch and dependencies

depends on
* gmime

* flake8 again

var/spack/repos/builtin/packages/xapian-core/package.py

@@ -0,0 +1,39 @@
+##############################################################################
+# Copyright (c) 2013-2016, 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 LICENSE file 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 XapianCore(AutotoolsPackage):
+    """Xapian is a highly adaptable toolkit which allows developers to easily
+    add advanced indexing and search facilities to their own applications.
+    It supports the Probabilistic Information Retrieval model and also
+    supports a rich set of boolean query operators."""
+
+    homepage = "https://xapian.org"
+    url      = "http://oligarchy.co.uk/xapian/1.4.3/xapian-core-1.4.3.tar.xz"
+
+    version('1.4.3', '143f72693219f7fc5913815ed858f295')
+
+    depends_on('zlib')