these 2 derivations will be built:
  /nix/store/7dify443mwhniih06i9f7ja0y3wsgnh7-letta-code-src-with-lock.drv
  /nix/store/ma1j3h5qrgqk0nkbfbna96bkn8z4i0pj-letta-code-0.31.3.drv