these 3 derivations will be built:
  /nix/store/0vqi7ipi4nxc640pk5mql3053jx9p28j-treefmt.toml.drv
  /nix/store/pcmav0gnyl7vcb4nkkvlw614fz5kjkyc-treefmt.drv
  /nix/store/8gd7fxxwkk0055lpvdvcf38q42h68v9b-treefmt-check.drv