Move packages and mock packages to /var/spack

bin/spack

@@ -39,6 +39,12 @@ SPACK_PREFIX = os.path.dirname(os.path.dirname(SPACK_FILE))
 SPACK_LIB_PATH = os.path.join(SPACK_PREFIX, "lib", "spack")
 sys.path.insert(0, SPACK_LIB_PATH)
 
+# If there is no working directory, use the spack prefix.
+try:
+    os.getcwd()
+except OSError:
+    os.chdir(SPACK_PREFIX)
+
 # clean up the scope and start using spack package instead.
 del SPACK_FILE, SPACK_PREFIX, SPACK_LIB_PATH
 import llnl.util.tty as tty
@@ -74,10 +80,8 @@ args = parser.parse_args()
 spack.verbose = args.verbose
 spack.debug = args.debug
 if args.mock:
-    from llnl.util.filesystem import join_path
     from spack.packages import PackageDB
-    mock_path = join_path(spack.module_path, 'test', 'mock_packages')
-    spack.db = PackageDB(mock_path)
+    spack.db = PackageDB(spack.mock_packages_path)
 
 # If the user asked for it, don't check ssl certs.
 if args.insecure: