these 3 derivations will be built:
  /nix/store/a9b27zh4hrw047mfzz2x5a5h36qgi6hq-letta-code-src-with-lock.drv
  /nix/store/d65b9zm5cpcz8xpfcziarv73fjz4ka2i-letta-code-0.31.0-npm-deps.drv
  /nix/store/plngs78cgpv3hy1cn05rdz814fmlwk4n-letta-code-0.31.0.drv