these 3 derivations will be built:
  /nix/store/ip1mpn3w4s1fivgvj6finj4q4nwl6y0i-treefmt.toml.drv
  /nix/store/xhyzhqp79m20xdlgf5133qzmxlj6328a-treefmt.drv
  /nix/store/w92w9casnc1fi1kvrss4h0w2bkf57s8s-treefmt-check.drv