these 3 derivations will be built:
  /nix/store/a4s40zvzjsxy7m7nak5a61ncidajxya6-treefmt.toml.drv
  /nix/store/i6bpm2qkx41hc4dxsy8x8kljn1h4kmc5-treefmt.drv
  /nix/store/96a4klj6k3iqx6fsiyriwamcdw02hlmy-treefmt-check.drv