these 3 derivations will be built:
  /nix/store/is3j5a7i35l0p0w1gdfgazg41c5k8y9q-droid.drv
  /nix/store/x9821lm5iykx0dj01yjxggr6306gccdi-droid-1.2.0.drv
  /nix/store/gqb2lxw8m2m229i1glkv6lqx5yvmplai-check-droid.drv