these 3 derivations will be built:
  /nix/store/6rybaxw3i9akn5jpfb9vzgfrmhx5wzh6-pi-1.3.0.drv
  /nix/store/sg34ys0pg0wl71wly1rz5khba04qgkwb-pi-acp-0.0.34.drv
  /nix/store/ddljhx4q8zfh9qqpab42nqpif0025hf3-check-pi-acp.drv