these 4 derivations will be built:
  /nix/store/047n7mkw3xy8qrqsr5jflk8lnh1qwrs7-ccusage-20.0.28-vendor-staging.drv
  /nix/store/5h0akd863ys5iz31cnsh4b956n08kv6s-ccusage-20.0.28-vendor.drv
  /nix/store/yayairym8jvi58xq4zh5104d9k539lw5-ccusage-20.0.28.drv
  /nix/store/gk6yi34jsg9b4za78wz07q7fqpsyli27-check-ccusage.drv