these 3 derivations will be built:
  /nix/store/72b6jxf9j7xsw8sm7qvviwjk8cb2d36y-letta-code-src-with-lock.drv
  /nix/store/pplw1smc7n0d2cccgg7gim42xi3nib4d-letta-code-0.34.60.drv
  /nix/store/2qijv67fbmrk7gnwx6z6n2wi19vyiyjx-check-letta-code.drv