Add wheel package to dev dependencies

We get warnings when we build the C extension without it. Probably they
are harmless, but let's pretend we understand what it is for.

diff --git a/psycopg/setup.py b/psycopg/setup.py
index fc990b4339a15f30c967bcf9196d9302c0532aa0..75715c4b8d6ffdff0e8cebb4952617397b78a4fa 100644 (file)
--- a/psycopg/setup.py
+++ b/psycopg/setup.py
@@ -45,6 +45,7 @@ extras_require = {
         "black",
         "flake8 >= 3.8, < 3.9",
         "mypy >= 0.812",
+        "wheel",
     ],
     # Requirements needed to build the documentation
     "docs": [