these 3 derivations will be built:
  /nix/store/cac7202nzhkfv8mpwqcdnd08mr42d1dr-treefmt.toml.drv
  /nix/store/4nc10vbs2w48wia99wwr5aqclakrkppa-treefmt.drv
  /nix/store/by0hapw974p7mzbwn8mljx4fjmv9ppc5-treefmt-check.drv