these 3 derivations will be built:
  /nix/store/ap55df9wvc9b3gxl0d3lkkwi2cx2wi4s-treefmt.toml.drv
  /nix/store/c3kawidfjinbw19aqqr2gmdc2gnbn427-treefmt.drv
  /nix/store/d89sdwa9jc2dxp0iq2qj0jm339q5p937-treefmt-check.drv