these 3 derivations will be built:
  /nix/store/bxsdwsl270ajz3bs1mqfw34lglybmal8-ccusage-20.0.26-vendor.drv
  /nix/store/z10j4hivkgb75ngz1mk0dzrlj2d1vbn0-ccusage-20.0.26.drv
  /nix/store/q2b6d9w5rpj8r16rsad8qiyafpy71mcv-check-ccusage.drv