these 3 derivations will be built:
  /nix/store/svn9vp8h9i3yfkpm5g69f88ba64bp8iv-treefmt.toml.drv
  /nix/store/y51dka9im2jd3sy63lz99vkr9hlhgksg-treefmt.drv
  /nix/store/7rckwarfv6jlzx9zczf6p8qdnj7n8z6d-treefmt-check.drv