add python package 'jsonwatch'

pkgs/top-level/python-packages.nix

@@ -2263,6 +2263,34 @@ rec {
     };
   };
 
+  jsonwatch = buildPythonPackage rec {
+    name = "jsonwatch-0.2.0";
+
+    disabled = isPyPy;
+
+    src = fetchurl {
+      url = "https://github.com/dbohdan/jsonwatch/archive/v0.2.0.tar.gz";
+      sha256 = "04b616ef97b9d8c3887004995420e52b72a4e0480a92dbf60aa6c50317261e06";
+    };
+
+    propagatedBuildInputs = [ six ];
+
+    meta = {
+      description = "Like watch -d but for JSON";
+      longDescription = ''
+        jsonwatch is a command line utility with which you can track changes in
+        JSON data delivered by a shell command or a web (HTTP/HTTPS) API.
+        jsonwatch requests data from the designated source repeatedly at a set
+        interval and displays the differences when the data changes. It is
+        similar in its behavior to how watch(1) with the -d switch works
+        for plain-text data.
+      '';
+      homepage = "https://github.com/dbohdan/jsonwatch";
+      license = stdenv.lib.licenses.mit;
+      platforms = stdenv.lib.platforms.all;
+    };
+  };
+
   logilab_astng = buildPythonPackage rec {
     name = "logilab-astng-0.24.3";