these 4 derivations will be built:
  /nix/store/bwhl5cpkgaxg6ikdrz86n5zgj6hm0gm4-ccusage-20.0.33-vendor-staging.drv
  /nix/store/p3lkipxa1wxcbxrdgxszk2dn9jjcz9yb-ccusage-20.0.33-vendor.drv
  /nix/store/z71dma1wcm4xb33kbf1zicljsnzkqz47-ccusage-20.0.33.drv
  /nix/store/xs62hlx2a89vdr836p9cff7rya3c99sb-check-ccusage.drv