these 3 derivations will be built:
  /nix/store/xqg42cinzf48kk1gpdrgl6s6wz3wzyza-pi-1.3.0.drv
  /nix/store/iy54g640766f0i7id49pi02ha3hq2wz1-pi-acp-0.0.34.drv
  /nix/store/8pr2lj7p6alcxiwnjgf0i9jvkxwkjhc4-check-pi-acp.drv