these 3 derivations will be built:
  /nix/store/aqf1m8i7qp7qxbcy2j5wvwgmmk58ak4j-treefmt.toml.drv
  /nix/store/lbbs2cmf40psqwxa8sfp8015hgx7mnn4-treefmt.drv
  /nix/store/fls5hdbwii0smw1i8031b3hypjrl8687-treefmt-check.drv