these 2 derivations will be built:
  /nix/store/wc82906mlyxkrgagli9y0avz0x6j8klw-letta-code-src-with-lock.drv
  /nix/store/268hj9h38qdhls65nxh96xmsfgg2k7d7-letta-code-0.31.2.drv