these 3 derivations will be built:
  /nix/store/jb87sb9zj7rarc311mhb2nh4k6x55jfp-source.drv
  /nix/store/5abdh6nzx3339yin4c25dd09d9xiiwif-agentty-0.9.43.drv
  /nix/store/my693c60f7kl1lfql5car5qg70dsdvj4-check-agentty.drv