these 3 derivations will be built:
  /nix/store/b5waymbv15xpgqin1l4ha0rbh4fkm3sn-droid.drv
  /nix/store/pdrkqrqzafz3b4svsczh0byzi7r0494c-droid-1.7.1.drv
  /nix/store/9iq92vnphaa2174523jb2p2psfgasdj3-check-droid.drv