these 4 derivations will be built:
  /nix/store/qmks3d3gv4a5y5pbq0i95bzcbv57m8kc-ccusage-20.0.34-vendor-staging.drv
  /nix/store/97ia4nzx4753m9msils0vw99sak8pc4x-ccusage-20.0.34-vendor.drv
  /nix/store/v07piv84j1iqk01nfihlghrj6cl6n18h-ccusage-20.0.34.drv
  /nix/store/kwr1glrdkh3f0wfbw5rirp0cd8sch775-check-ccusage.drv
this path will be fetched (0.0 KiB download, 10.6 MiB unpacked):
  /nix/store/q6qc3zvb5y132mz80rkb7cx82nn6fmmd-source