these 3 derivations will be built:
  /nix/store/nxaw9arcarvq80ql06gi27vg4wb3l7il-droid.drv
  /nix/store/28wngdmhlczi5q1nx47vkrb7nn376nwg-droid-1.2.0.drv
  /nix/store/chqrzim4a266hzhg1vpd9ds50yh74m7p-check-droid.drv