this derivation will be built:
  /nix/store/pc0pzg11k4lyq0w97kgz0y20favapw10-treefmt.toml.drv
this path will be fetched (3.6 MiB download, 9.1 MiB unpacked):
  /nix/store/3857m6grhqavknf3pzgay1l6wkcyni7c-dyff-1.12.0