these 3 derivations will be built:
  /nix/store/vs7y29cl56hdhfbgh44riihx5mwcz4kv-treefmt.toml.drv
  /nix/store/jm0ynwpcn3903lbn577bkida2v3y8650-treefmt.drv
  /nix/store/wv0qpjs8ikny63mlk6msycvk272j6ws3-treefmt-check.drv