these 2 derivations will be built:
  /nix/store/r532wksn2mfc9svayw46l5y3lnhq5kch-pi-acp-0.0.34.drv
  /nix/store/pcfb87zl1qbcww2bizx7kf0j6mv8j150-check-pi-acp.drv