pylint: add longDescription

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

@@ -87,6 +87,15 @@ buildPythonPackage rec {
   meta = with lib; {
     homepage = "https://pylint.pycqa.org/";
     description = "A bug and style checker for Python";
+    longDescription = ''
+      Pylint is a Python static code analysis tool which looks for programming errors,
+      helps enforcing a coding standard, sniffs for code smells and offers simple
+      refactoring suggestions.
+      Pylint is shipped with following additional commands:
+      - pyreverse: an UML diagram generator
+      - symilar: an independent similarities checker
+      - epylint: Emacs and Flymake compatible Pylint
+    '';
     license = licenses.gpl1Plus;
     maintainers = with maintainers; [ totoroot ];
   };