Add `config_dir` function.

* gd_diff.py (config_dir): New function.
* tests/test_gd_diff.py (test_config_dir): Add test function for
  `config_dir`.

1 files changed, 4 insertions, 0 deletions

diff --git a/gd_diff.py b/gd_diff.py
index 803afd3..8bb9bf5 100644
--- a/gd_diff.py
+++ b/gd_diff.py
@@ -209,3 +209,7 @@ def slurp_fields_from_readme(content):
             field_values[field] = None
 
     return field_values
+
+
+def config_dir():
+    return os.path.join(os.getenv('HOME'), '.config', 'gns-deb-diff')