these 3 derivations will be built:
  /nix/store/04yhh3vapy4gb6f45svapl2pskbm8gp6-treefmt.toml.drv
  /nix/store/4nvnyxlpzs5p2r5xgwid1xklr7m3g0sj-treefmt.drv
  /nix/store/s6rm4j8787rd47nnq235jz9pj6lrc7fr-treefmt-check.drv