these 3 derivations will be built:
  /nix/store/rb56wx927j4z88yr7za3rhiv8np2k5ag-treefmt.toml.drv
  /nix/store/vfzkw22qr5j6k4zlk7grkmnncipl2gri-treefmt.drv
  /nix/store/nhmxvss9rmfsqjl737dznjsi2ayc83xx-treefmt-check.drv