these 3 derivations will be built:
  /nix/store/f900ksm7sfzgisqvfybggqyzih663f7f-pi-1.5.1.drv
  /nix/store/lwqm6vn1hi0qa06hay1kjl5pnr91abbb-pi-acp-0.0.34.drv
  /nix/store/17awnkv32dy4dyj21cinjq680bvxkdrc-check-pi-acp.drv