diff --git a/livefs_edit/actions.py b/livefs_edit/actions.py
index ba18986..106cf64 100644
--- a/livefs_edit/actions.py
+++ b/livefs_edit/actions.py
@@ -174,23 +174,27 @@ def install_debs(ctxt, debs: List[str] = ()):
         run(['umount', rootfs_path])
         os.unlink(rootfs_path)
 
+
 def rm_ro(func, path, _):
     """Clear readonly attribute and retry removal"""
     os.chmod(path, stat.S_IWRITE)
     func(path)
 
+
 def rm_f(path):
     if os.path.exists(path):
         if os.path.isdir(path):
-            shutil.rmtree(path, onerror = rm_ro)
+            shutil.rmtree(path, onerror=rm_ro)
         else:
             os.chmod(path, stat.S_IWRITE)
             os.unlink(path)
 
+
 @register_action()
 def rm(ctxt, path):
     rm_f(ctxt.p(path, allow_abs=True))
 
+
 def download_snap(ctxt, snap_name, channel):
     dldir = ctxt.tmpdir()
     run([