these 2 derivations will be built:
  /nix/store/wphs9nb04sqr6xnmjfyzanrfpd2n23w6-ccusage-20.0.23-vendor.drv
  /nix/store/yci57rj3br1gzzh2r6fjmnn27g2bnjlq-ccusage-20.0.23.drv