these 3 derivations will be built:
  /nix/store/jbndfcb9fnwg58hpxbmnpiqr5v50dy3n-treefmt.toml.drv
  /nix/store/swhj9gkxcgrxmg1zqx499p4mla6cmbby-treefmt.drv
  /nix/store/ssicnsn0q9j2h2adbip2xpip8mp9s27v-treefmt-check.drv