these 3 derivations will be built:
  /nix/store/r8xx0rsddp1ba0wmn58z6w3xy58akwkl-letta-code-src-with-lock.drv
  /nix/store/zr37ws0lcykix6wz0m6rb78pcj3fl471-letta-code-0.34.21.drv
  /nix/store/ghzyc2wk6l6wrfifl7ca6p5w35qgqnjc-check-letta-code.drv