{...}: {
  perSystem = {pkgs, ...}: {
    packages.handy = pkgs.appimageTools.wrapType2 rec {
      pname = "handy";
      version = "0.8.2";

      src = pkgs.fetchurl {
        url = "https://github.com/cjpais/Handy/releases/download/v${version}/Handy_${version}_amd64.AppImage";
        hash = "sha256-+rRePge3ts87RiqZDF9/af2MDP5OBWs8yJSTHPe1fKM=";
      };

      extraInstallCommands = let
        contents = pkgs.appimageTools.extract {inherit pname version src;};
      in ''
        desktop_file=$(find ${contents} -name "*.desktop" | head -n1)
        if [ -n "$desktop_file" ]; then
          install -m 444 -D "$desktop_file" "$out/share/applications/${pname}.desktop"
          substituteInPlace "$out/share/applications/${pname}.desktop" \
            --replace 'Exec=AppRun' 'Exec=${pname}' || true
          sed -i -E 's|^Exec=.*$|Exec=${pname}|g' "$out/share/applications/${pname}.desktop" || true
        fi

        if [ -d ${contents}/usr/share/icons ]; then
          cp -r ${contents}/usr/share/icons $out/share
        fi
      '';
    };
  };
}