these 6 derivations will be built:
  /nix/store/64f54756pgjajkvc2hr1azxsrzmk2pch-model_prices_and_context_window.json.drv
  /nix/store/kxfhi4qkrnr5yfwrjvl96nsxyhrpxz3s-source.drv
  /nix/store/i491cqlg16zvzv4zkfqw3ihlrasbcpvm-ccusage-20.0.44-vendor-staging.drv
  /nix/store/jrnzb48q8dpxmiagkf3vlrxp2f4c6a7p-ccusage-20.0.44-vendor.drv
  /nix/store/bf62gf7cr9maarasg920inbaq2z97l83-ccusage-20.0.44.drv
  /nix/store/gd6mjcynnhch9dj1p4gm7n1z2p4vs14q-check-ccusage.drv