python3Packages.pluggy: use pyproject format

pkgs/development/python-modules/pluggy/default.nix

@@ -9,25 +9,22 @@
 buildPythonPackage rec {
   pname = "pluggy";
   version = "1.0.0";
+  format = "pyproject";
 
   src = fetchPypi {
     inherit pname version;
     sha256 = "4224373bacce55f955a878bf9cfa763c1e360858e330072059e10bad68531159";
   };
 
-  checkPhase = ''
-    py.test
-  '';
-
-  # To prevent infinite recursion with pytest
-  doCheck = false;
-
   nativeBuildInputs = [ setuptools-scm ];
 
   propagatedBuildInputs = lib.optionals (pythonOlder "3.8") [
     importlib-metadata
   ];
 
+  # To prevent infinite recursion with pytest
+  doCheck = false;
+
   meta = {
     description = "Plugin and hook calling mechanisms for Python";
     homepage = "https://github.com/pytest-dev/pluggy";