this derivation will be built:
  /nix/store/gqlnny6m9xdzvyw3d9mnd0va0kzhrh9l-treefmt.toml.drv
this path will be fetched (5.5 MiB download, 25.4 MiB unpacked):
  /nix/store/6il2wl1m8y3zqwfc8d7r23d8v5hbdckb-nickel-1.18.0