these 3 derivations will be built:
  /nix/store/bng88vz8zwgcd2nnrl1vh4a515xwg4k6-treefmt.toml.drv
  /nix/store/nwr6zrpy853bwp8a0ir5119q4rm0czsz-treefmt.drv
  /nix/store/l6cy3pswk58nwg305g3k5h0x2q47mm16-treefmt-check.drv