these 2 derivations will be built:
  /nix/store/lds1sykrnwbp8gad80v6zm98h44lw23l-treefmt.toml.drv
  /nix/store/4k990yzfidn1g7zi802v9x79x0k1z05c-treefmt.drv
this path will be fetched (9.8 MiB download, 28.1 MiB unpacked):
  /nix/store/8vyr39q9cqh3fja0y8rca0w8gjsj19hf-ruff-0.16.4