anchor.diff:        --prefix XDG_DATA_DIRS : "${librsvg}/share"
       )
       for i in $out/share/applications/*; do
  -      substituteInPlace $i --replace "gnome-control-center" "$out/bin/gnome-control-center"
  +      substituteInPlace $i --replace "Exec=gnome-control-center" "Exec=$out/bin/gnome-control-center"
       done
     '';
   
     passthru = {
       updateScript = gnome3.updateScript {
  -      packageName = "gnome-control-center";
  -      attrPath = "gnome3.gnome-control-center";
  +      packageName = pname;
  +      attrPath = "gnome3.${pname}";
       };
     };
   
  
positive.code:     gnome-online-accounts libsoup colord libpulseaudio fontconfig colord-gtk
      accountsservice libkrb5 networkmanagerapplet libwacom samba libnotify
      grilo libpwquality cracklib vino libcanberra-gtk3 libgudev
      gdk_pixbuf defaultIconTheme librsvg clutter clutter-gtk
      networkmanager modemmanager gnome-bluetooth tracker
    ];
  
  
negative.code:     })
    ];
  
    postPatch = ''
      chmod +x meson_post_install.py # patchShebangs requires executable file
      patchShebangs meson_post_install.py
    '';
  
    preFixup = ''
      gappsWrapperArgs+=(
        --prefix XDG_DATA_DIRS : "${gnome3.gnome-themes-standard}/share:${sound-theme-freedesktop}/share"
  