these 3 derivations will be built:
  /nix/store/gkz61kj6lbal4i07d9c1saqcgcxqc4nv-letta-code-src-with-lock.drv
  /nix/store/dlk2j7wmw2sbc70gbr2k1g9gvqc3jn8k-letta-code-0.34.51.drv
  /nix/store/4frqh5cgwqqqinydyqsrzcncakw6nwfs-check-letta-code.drv