these 3 derivations will be built:
  /nix/store/a4hl35sf8i04wy1b1zarnjxgy1w3x79c-treefmt.toml.drv
  /nix/store/90z4pcx7badp4mxjjgy9r8capm72k67r-treefmt.drv
  /nix/store/wg5z72pds6pn67i9k5d4db78d5mqn827-treefmt-check.drv