anchor.diff:      description = "Linux client for skype";
       homepage = "https://www.skype.com";
       license = licenses.unfree;
  -    maintainers = with lib.maintainers; [ panaeon jraygauthier ];
  +    maintainers = with maintainers; [ panaeon jraygauthier ];
       platforms = [ "x86_64-linux" ];
     };
   }
  
positive.code: { lib, stdenv, fetchurl, dpkg
  , alsa-lib, atk, cairo, cups, curl, dbus, expat, fontconfig, freetype, gdk-pixbuf, glib, glibc, gnome2, gnome
  , gtk3, libappindicator-gtk3, libnotify, libpulseaudio, libsecret, libv4l, nspr, nss, pango, systemd, wrapGAppsHook, xorg
  , at-spi2-atk, libuuid, at-spi2-core, libdrm, mesa, libxkbcommon }:
  
  let
  
    # Please keep the version x.y.0.z and do not update to x.y.76.z because the
    # source of the latter disappears much faster.
    version = "8.69.0.77";
  
    rpath = lib.makeLibraryPath [
      alsa-lib
  
negative.code:           "https://mirror.cs.uchicago.edu/skype/pool/main/s/skypeforlinux/skypeforlinux_${version}_amd64.deb"
            "https://web.archive.org/web/https://repo.skype.com/deb/pool/main/s/skypeforlinux/skypeforlinux_${version}_amd64.deb"
          ];
          sha256 = "sha256-z3xsl53CSJthSd/BMbMD7RdYQ4z9oI/Rb9jUvd82H4E=";
        }
      else
        throw "Skype for linux is not supported on ${stdenv.hostPlatform.system}";
  