these 3 derivations will be built:
  /nix/store/qd6ycgdyqmairn5gwh9xqhnfgvng26ma-treefmt.toml.drv
  /nix/store/hw8mdkzcqwpfn1357f1q5a6nf69amisw-treefmt.drv
  /nix/store/yq6hl48dpnar1131vhn44ddrnsl8fr7w-treefmt-check.drv