these 3 derivations will be built:
  /nix/store/0ign609xxprj4iq99bma6wfbldjfqbbc-treefmt.toml.drv
  /nix/store/nf6i4al98zl90b014v2s15vfr99n37cb-treefmt.drv
  /nix/store/72yfl4bki4rw6m1b77c63mdhyd8cq23p-treefmt-check.drv