python-afs: Disable running the checks

It looks like nixos-24.05 tries to run the tests, which expect nose, so
the nixos-24.05 CI build fails now. Unstable nixos doesn't have nose.
Since the tests also expect OpenAFS to be working on the build machine
(they access ThisCell and files in AFS), don't bother fixing the tests
to not use nose, and just stop running the tests during the build.

Author: dehnert

pkgs/python-afs.nix

@@ -31,6 +31,13 @@ in buildPythonPackage {
     "afs"
   ];
 
+  # The tests assume that we have AFS installed and working on the machine
+  # (e.g., they access files in AFS, expect ThisCell to be set, etc.), so
+  # skip them.
+  # pythonImportsCheck is run regardless per
+  # https://ryantm.github.io/nixpkgs/languages-frameworks/python/#using-pythonimportscheck
+  doCheck = false;
+
   #meta = with lib; {
   #  description = "Python library for Project Athena forum system";
   #  homepage = "https://github.com/mit-athena/python-discuss";