these 3 derivations will be built:
  /nix/store/s3xxw420h0zl3ld3xh158h4m7v24k8mq-droid.drv
  /nix/store/d47qn981s03g3faapr53nrnmcp24l0fh-droid-1.4.1.drv
  /nix/store/c0bn4hpzwai1v00vnvhdghp0smsfsm22-check-droid.drv