1 files changed, 10 insertions, 9 deletions
diff --git a/lib/spack/spack/config.py b/lib/spack/spack/config.py
index 420a432fe9..038a879a81 100644
--- a/lib/spack/spack/config.py
+++ b/lib/spack/spack/config.py
@@ -36,34 +36,34 @@ import os
 import re
 import sys
 from contextlib import contextmanager
-from six import iteritems
-from ordereddict_backport import OrderedDict
 from typing import List  # novm
 
 import ruamel.yaml as yaml
+from ordereddict_backport import OrderedDict
 from ruamel.yaml.error import MarkedYAMLError
+from six import iteritems
 
 import llnl.util.lang
 import llnl.util.tty as tty
 from llnl.util.filesystem import mkdirp
 
-import spack.paths
 import spack.architecture
 import spack.compilers
+import spack.paths
 import spack.schema
 import spack.schema.compilers
+import spack.schema.config
+import spack.schema.env
 import spack.schema.mirrors
-import spack.schema.repos
-import spack.schema.packages
 import spack.schema.modules
-import spack.schema.config
+import spack.schema.packages
+import spack.schema.repos
 import spack.schema.upstreams
-import spack.schema.env
-from spack.error import SpackError
-from spack.util.cpus import cpus_available
 
 # Hacked yaml for configuration files preserves line numbers.
 import spack.util.spack_yaml as syaml
+from spack.error import SpackError
+from spack.util.cpus import cpus_available
 
 #: Dict from section names -> schema for that section
 section_schemas = {
@@ -935,6 +935,7 @@ def validate(data, schema, filename=None):
     on Spack YAML structures.
     """
     import jsonschema
+
     # validate a copy to avoid adding defaults
     # This allows us to round-trip data without adding to it.
     test_data = copy.deepcopy(data)