these 3 derivations will be built:
  /nix/store/g57jz913ahjzrq99dx8vr94q5sdbx2y6-treefmt.toml.drv
  /nix/store/nhsmi8nlyjzj5ag07h6ymr03p5b1s2nf-treefmt.drv
  /nix/store/wlxzqwmfgvjk91qch8f4isqn8ifswphz-treefmt-check.drv