gup: 0.5.5 -> 0.6.0 and derivation update

pkgs/development/tools/build-managers/gup/default.nix

@@ -1,21 +1,21 @@
-{ stdenv, fetchFromGitHub, lib, python, which }:
-let
-  version = "0.5.5";
-  src = fetchFromGitHub {
-    sha256 = "12yv0j333z6jkaaal8my3jx3k4ml9hq8ldis5zfvr8179d4xah7q";
-    rev = "version-${version}";
-    repo = "gup";
-    owner = "timbertson";
-  };
-in
+{ stdenv, fetchFromGitHub, lib, pythonPackages, nix-update-source, curl }:
 import ./build.nix
-  { inherit stdenv lib python which; }
-  { inherit src version;
+  { inherit stdenv lib pythonPackages; }
+  { inherit (nix-update-source.fetch ./src.json) src version;
     meta = {
-      inherit (src.meta) homepage;
+      homepage = https://github.com/timbertson/gup/;
       description = "A better make, inspired by djb's redo";
       license = stdenv.lib.licenses.lgpl2Plus;
       maintainers = [ stdenv.lib.maintainers.timbertson ];
       platforms = stdenv.lib.platforms.all;
     };
+    passthru = {
+      updateScript = ''
+        set -e
+        echo
+        cd ${toString ./.}
+        ${nix-update-source}/bin/nix-update-source --prompt version src.json
+        ./build.nix.gup build.nix
+      '';
+    };
   }