these 3 derivations will be built:
  /nix/store/b6wlawnicgx81sgczz1n3pv3s0c1mkvp-treefmt.toml.drv
  /nix/store/v4rv2rzajv4lyrlsp97v67m6hpx8aw0g-treefmt.drv
  /nix/store/225wrwmfzsndcz1j6gy3i2686iqyvg8i-treefmt-check.drv