these 3 derivations will be built:
  /nix/store/ay995nlsz5g44vas0hh6m91sv0sln046-treefmt.toml.drv
  /nix/store/cdbka7rvmc48v5540rdixw8csw2va8xa-treefmt.drv
  /nix/store/vsg5vpna4r4nfcw95d8wgkfm2plgx026-treefmt-check.drv