Add mercurial package, used as test dependency

var/spack/repos/builtin/packages/py-coverage/package.py

@@ -27,7 +27,7 @@
 
 class PyCoverage(Package):
     """ Testing coverage checker for python """
-    # FIXME: add a proper url for your package's homepage here.
+
     homepage = "http://nedbatchelder.com/code/coverage/"
     url      = "https://pypi.python.org/packages/source/c/coverage/coverage-4.0a6.tar.gz"
 

var/spack/repos/builtin/packages/py-mercurial/package.py

@@ -0,0 +1,44 @@
+##############################################################################
+# 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 PyMercurial(Package):
+    """Mercurial is a free, distributed source control management tool.
+    It efficiently handles projects of any size and offers an easy and
+    intuitive interface."""
+
+    homepage = "https://www.mercurial-scm.org/"
+    url = "https://pypi.python.org/packages/source/m/mercurial/mercurial-3.9.tar.gz"
+
+    version('3.9', 'e2b355da744e94747daae3a5339d28a0',
+            url="https://pypi.python.org/packages/22/73/e8ef24d3cb13e4fa2695417e13fd22effa1c8e28465eea91a9f84aa922cd/mercurial-3.9.tar.gz")
+
+    extends('python')
+
+    depends_on('py-setuptools', type='build')
+
+    def install(self, spec, prefix):
+        setup_py('install', '--prefix={0}'.format(prefix))