these 2 derivations will be built:
  /nix/store/jn5j4dgvp9yf76gvbvdsifxdq0x7dplb-amp-linux-x64.drv
  /nix/store/bik4ngdmpafs3ywpa5gjd2mlxcx7pc5i-amp-0.0.1789634559-g4d6081.drv