nixpkgs/pkgs/development/compilers/ghcjs/ghcjs-boot.nix

{ fetchgit }:
fetchgit {
  url = git://github.com/ghcjs/ghcjs-boot.git;
  rev = "3529c6ab61d5f786bdde449fd069520664330b30";
  sha256 = "0d33nmbwrdn7ai4lsrn3qzcfy71hbini0jl437387cxdh3z6sjqa";
  fetchSubmodules = true;
}