{ fetchgit }:
fetchgit {
  url = git://github.com/ghcjs/ghcjs-boot.git;
  rev = "97dea5c4145bf80a1e7cffeb1ecd4d0ecacd5a2f";
  sha256 = "1cgjzm595l2dx6fibzbkyv23bp1857qia0hb9d8aghf006al558j";
  fetchSubmodules = true;
}