with import ./. {};

stdenv.mkDerivation {
  name = "foo";
  buildInputs = [ nixUnstable ];

  unpackPhase = ":";

  buildPhase = ''
    readlink -f $(type -P nix-store)

    export HOME=$NIX_BUILD_TOP/ROOT/home/foo
    export NIX_REMOTE=local?root=$NIX_BUILD_TOP/ROOT
    nix-store --add ${stdenv} ${hello.src}
    nix-instantiate ${./.} -A hello
    nix-store -r $(nix-instantiate ${./.} -A hello) --option build-use-substitutes false
  '';
}