From: Paolo Bonzini <pbonzini@redhat.com>

This is only available in Python 3.7+.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
---
 python/scripts/mkvenv.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/python/scripts/mkvenv.py b/python/scripts/mkvenv.py
index 31193b3b22..8e097e4759 100644
--- a/python/scripts/mkvenv.py
+++ b/python/scripts/mkvenv.py
@@ -856,6 +856,7 @@ def main() -> int:
     subparsers = parser.add_subparsers(
         title="Commands",
         dest="command",
+        required=True,
         metavar="command",
         help="Description",
     )
-- 
2.40.0