these 3 derivations will be built:
  /nix/store/k1qlv9cl39g9lma5pfx8jq5np8ha4ywk-treefmt.toml.drv
  /nix/store/9d9i96r8gj8c790s0kyl48hw0960pq42-treefmt.drv
  /nix/store/4xjanbjv5afab18ja688hrli67v28zxs-treefmt-check.drv