{ lib
, stdenv
, fetchFromGitHub
, emacs
}:

stdenv.mkDerivation {
  pname = "isearch-plus";
  version = "3434+unstable=2021-08-23";

  src = fetchFromGitHub {
    owner = "emacsmirror";
    repo = "isearch-plus";
    rev = "93088ea0ac4d51bdb76c4c32ea53172f6c435852";
    hash = "sha256-kD+Fyps3fc5YK6ATU1nrkKHazGMYJnU2gRcpQZf6A1E=";
  };

  buildInputs = [
    emacs
  ];

  buildPhase = ''
    runHook preBuild
    emacs -L . --batch -f batch-byte-compile *.el
    runHook postBuild
  '';

  installPhase = ''
    runHook preInstall
    install -d $out/share/emacs/site-lisp
    install *.el *.elc $out/share/emacs/site-lisp
    runHook postInstall
  '';

  meta = with lib; {
    homepage = "https://www.emacswiki.org/emacs/IsearchPlus";
    description = "Extensions to isearch";
    license = licenses.gpl2Plus;
    maintainers = with maintainers; [ leungbk AndersonTorres ];
    platforms = emacs.meta.platforms;
  };
}