these 3 derivations will be built:
  /nix/store/a4hl35sf8i04wy1b1zarnjxgy1w3x79c-treefmt.toml.drv
  /nix/store/90z4pcx7badp4mxjjgy9r8capm72k67r-treefmt.drv
  /nix/store/p4sva8nw0gpafr1ghds0hny9h9p31p45-treefmt-check.drv