these 3 derivations will be built:
  /nix/store/8ybh6nfp7ph671hc94ar2r6jfip21pi5-treefmt.toml.drv
  /nix/store/fd3raj6ykaj9x9g81rr89sssdw7dg43g-treefmt.drv
  /nix/store/cqpy9iw3r79ic6y89v8nvh7ibv3zbqr7-treefmt-check.drv