these 3 derivations will be built:
  /nix/store/rjz9jffkjzv15asiy4cs9bn9drxkq7hh-ccusage-20.0.42-vendor.drv
  /nix/store/c0vcnm10g36n8mn0hkbngjfy1d3wz6k4-ccusage-20.0.42.drv
  /nix/store/lhf7mpbcgzxcpqglfishp6jih25a7i5a-check-ccusage.drv