this derivation will be built:
  /nix/store/hc7gpdflv8hzd9rslw87l5hgf24z0qn4-pi-pack-pi-compatibility.drv
building '/nix/store/hc7gpdflv8hzd9rslw87l5hgf24z0qn4-pi-pack-pi-compatibility.drv'