anchor.diff: -{ stdenv, fetchurl, intltool, pkgconfig, gnome3, gtk3
  -, gobjectIntrospection, gdk_pixbuf, librsvg, libgweather, autoreconfHook
  -, geoclue2, wrapGAppsHook, folks, libchamplain, gfbgraph, file, libsoup
  +{ stdenv, fetchurl, meson, ninja, gettext, python3, pkgconfig, gnome3, gtk3
  +, gobjectIntrospection, gdk_pixbuf, librsvg, libgweather
  +, geoclue2, wrapGAppsHook, folks, libchamplain, gfbgraph, libsoup
   , webkitgtk, gjs, libgee, geocode-glib, evolution-data-server, gnome-online-accounts }:
   
   let
     pname = "gnome-maps";
  -  version = "3.28.2";
  +  version = "3.30.2.1";
   in stdenv.mkDerivation rec {
     name = "${pname}-${version}";
   
     src = fetchurl {
       url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${name}.tar.xz";
  -    sha256 = "1yzi08a9316jplgsl2z0qzlqxhghyqcjhv0m6i94wcain4mxk1z7";
  +    sha256 = "01hqv36j5ji0djq4vl151113bqhh4hpz72d88fm8zds4pdlx7l57";
     };
   
     doCheck = true;
   
  -  nativeBuildInputs = [ intltool wrapGAppsHook file autoreconfHook pkgconfig ];
  +  nativeBuildInputs = [ meson ninja pkgconfig gettext python3 wrapGAppsHook ];
     buildInputs = [
       gobjectIntrospection
       gtk3 geoclue2 gjs libgee folks gfbgraph
  
positive.code:     webkitgtk
    ];
  
    # The .service file isn't wrapped with the correct environment
    # so misses GIR files when started. By re-pointing from the gjs
    # entry point to the wrapped binary we get back to a wrapped
    # binary.
    preConfigure = ''
      substituteInPlace "data/org.gnome.Maps.service.in" \
          --replace "Exec=@pkgdatadir@/org.gnome.Maps" \
                    "Exec=$out/bin/gnome-maps"
  
negative.code:     homepage = https://wiki.gnome.org/Apps/Maps;
      description = "A map application for GNOME 3";
      maintainers = gnome3.maintainers;
      license = licenses.gpl2Plus;
      platforms = platforms.linux;
    };
  }
  