qhull: 2016.1 -> 2020.2

useful to fix https://github.com/nix-community/poetry2nix/issues/280.

pkgs/development/libraries/qhull/default.nix

@@ -1,13 +1,14 @@
 { lib, stdenv, fetchFromGitHub, cmake }:
 
-stdenv.mkDerivation {
-  name = "qhull-2016.1";
+stdenv.mkDerivation rec {
+  pname = "qhull";
+  version = "2020.2";
 
   src = fetchFromGitHub {
     owner = "qhull";
     repo = "qhull";
-    rev = "5bbc75608c817b50383a0c24c3977cc09d0bbfde";
-    sha256 = "0wrgqc2mih7h8fs9v5jcn9dr56afqi9bgh2w9dcvzvzvxizr9kjj";
+    rev = version;
+    sha256 = "sha256-djUO3qzY8ch29AuhY3Bn1ajxWZ4/W70icWVrxWRAxRc=";
   };
 
   nativeBuildInputs = [ cmake ];