these 3 derivations will be built:
  /nix/store/cvmvbh6k7adkr0qyw00skwj1x69nhvaf-ccusage-20.0.30-vendor.drv
  /nix/store/cd0075kmgwm2wwfxi1i22vbxxh7x80xi-ccusage-20.0.30.drv
  /nix/store/z1sfsrprc0h5km6sjwyrs4vjm4h00hv6-check-ccusage.drv