these 3 derivations will be built:
  /nix/store/mmzp3kxkqsp9d08m25fxdmkmyqrbsxx4-treefmt.toml.drv
  /nix/store/w5indsizdjj4dmncx44sq66mnll0a51h-treefmt.drv
  /nix/store/b47nbff9n3jyi3dr95722n0c9b1ihb0q-treefmt-check.drv