these 3 derivations will be built:
  /nix/store/4f7yc5w2q8y008ba7gyffs0g06m8k94i-treefmt.toml.drv
  /nix/store/2gvyl6dl3k71pal0p4yfpx56hm69iigj-treefmt.drv
  /nix/store/9bhqyz0x56qj2yvnqly93hdhq9c14p99-treefmt-check.drv