these 3 derivations will be built:
  /nix/store/y5ijqlfv3s4ywzvcfwrcqj36f81wbdcy-letta-code-src-with-lock.drv
  /nix/store/niaxd53zg2ilyb9fhbv5ap4rk5hl0yyc-letta-code-0.34.58.drv
  /nix/store/bg7xh2ax0yhyvk1x4an9crrl9pfyb7j6-check-letta-code.drv