these 3 derivations will be built:
  /nix/store/m03yps7nz4x46kdfxggwi9mrayrhj4i3-pi-1.3.0.drv
  /nix/store/bfig22bhlif1qjqdzz6h2ymrsqfhjg5a-pi-acp-0.0.34.drv
  /nix/store/3kbbk439fi40pgcikj93n1v37fwkgr06-check-pi-acp.drv