these 5 derivations will be built:
  /nix/store/ynbjdkxwg6nzcbiqlnmqibkkaf8lw5af-source.drv
  /nix/store/f3yngi5h0hvg65r8x091c8wm99ni52c2-ccusage-20.0.26-vendor-staging.drv
  /nix/store/9slv7cvp6gd0bmynhia52cfh9cirdv07-ccusage-20.0.26-vendor.drv
  /nix/store/w3dkvhggmpq1kqadmdnsis34493mg36m-ccusage-20.0.26.drv
  /nix/store/r1qgkyn8hqd8v0a06ndg9kg42r46qhv8-check-ccusage.drv