these 3 derivations will be built:
  /nix/store/i1rwisq9n7zivvhcp9gvd1jipjs33rjc-treefmt.toml.drv
  /nix/store/l6mf5r9vpmz575v8pr1rywygv0dhwdwv-treefmt.drv
  /nix/store/d17m85zfvznz22gswpibs4bifgr84g5r-treefmt-check.drv