these 3 derivations will be built:
  /nix/store/ap55df9wvc9b3gxl0d3lkkwi2cx2wi4s-treefmt.toml.drv
  /nix/store/lfydrq100s9qa1agg69zkh7d33n95jv1-treefmt.drv
  /nix/store/why0cax301qf8wcaq88iaj2j3dvvcvfr-treefmt-check.drv