phototonic: 1.7.1 -> 2.1

pkgs/applications/graphics/phototonic/default.nix

···
 
 stdenv.mkDerivation rec {
   name = "phototonic-${version}";
-  version = "1.7.1";
+  version = "2.1";
 
   src = fetchFromGitHub {
     repo = "phototonic";
     owner = "oferkv";
-    # There is currently no tag for 1.7.1 see
-    # https://github.com/oferkv/phototonic/issues/214
-    rev = "c37070e4a068570d34ece8de1e48aa0882c80c5b";
-    sha256 = "1agd3bsrpljd019qrjvlbim5l0bhpx53dhpc0gvyn0wmcdzn92gj";
+    rev = "v${version}";
+    sha256 = "0csidmxl1sfmn6gq81vn9f9jckb4swz3sgngnwqa4f75lr6604h7";
   };
 
   buildInputs = [ qtbase exiv2 ];