these 5 derivations will be built:
  /nix/store/qhyanzigaqb6i86s4abg6hrh02msirss-source.drv
  /nix/store/q1frygygjrm6cnjpqxxgz3i3dj2579dg-ccusage-20.0.21-vendor-staging.drv
  /nix/store/07rx07skdf1lzc56hvj4n6rd57rn8ss8-ccusage-20.0.21-vendor.drv
  /nix/store/5zb1wrix6gwmngn6k6cip9dz0m42n0r6-model_prices_and_context_window.json.drv
  /nix/store/3ddzpgf513ph3f22v3rxrrkphbkfz76j-ccusage-20.0.21.drv