these 3 derivations will be built:
  /nix/store/bimczjlkkja53v2llr7fzgi9xdhjsgw0-treefmt.toml.drv
  /nix/store/yxp2rnarh95ym588z3kwbm567v5inww8-treefmt.drv
  /nix/store/dh1053r3m886midi4yklmwl8xwjkv3r5-treefmt-check.drv