anchor.diff:  
     sourceRoot = ".";
     nativeBuildInputs = [ makeWrapper dpkg ];
  -  buildInputs = [ luajit gtk3-x11 SDL2 glib ];
  +  buildInputs = [
  +    glib
  +    gnutar
  +    gtk3-x11
  +    luajit
  +    sdcv
  +    SDL2
  +  ];
     unpackCmd = "dpkg-deb -x ${src} .";
   
     dontConfigure = true;
  
positive.code: , fetchurl
  , makeWrapper
  , dpkg
  , luajit
  , gtk3-x11
  , SDL2
  , glib
  , noto-fonts
  , nerdfonts }:
  let font-droid = nerdfonts.override { fonts = [ "DroidSansMono" ]; };
  
negative.code:   installPhase = ''
      mkdir -p $out
      cp -R usr/* $out/
      ln -sf ${luajit}/bin/luajit $out/lib/koreader/luajit
      ln -sf ${sdcv}/bin/sdcv $out/lib/koreader/sdcv
      ln -sf ${gnutar}/bin/tar $out/lib/koreader/tar
      find $out -xtype l -delete
      for i in ${noto-fonts}/share/fonts/truetype/noto/*; do
          ln -s "$i" $out/lib/koreader/fonts/noto/
  