{ appimagekit, hostSystem, writeScriptBin }: let

  arch = builtins.getAttr hostSystem {
    "x86_64-linux" = "x86_64";
    "aarch64-linux" = "aarch64";
    "armv6l-linux" = "armhf";
    "i686-linux" = "i686";
  };

  # https://github.com/AppImage/type2-runtime
  # The author has set up some crazy continuous integration build system with
  # github, which is really cool, except that it doesn't preserve any older
  # builds of the project. And it's pretty difficult to build it ourselves. So
  # fuck it, just embed the build artifacts directly in this project.
  runtimeFileVersion = "81de3e1";
  runtimeFile = "${./.}/runtime-${arch}-${runtimeFileVersion}";

in writeScriptBin "appimagetool" ''
    export PATH=$PATH:${appimagekit}/bin
    export ARCH=${arch}
    exec ${appimagekit}/bin/appimagetool --runtime-file ${runtimeFile} "$@"
''