these 3 derivations will be built:
  /nix/store/dhyi1hr3ysb6c3r6381j67h86n8a12c1-treefmt.toml.drv
  /nix/store/11f9a3lca7bi9s3mgqpb3sb1314b23kb-treefmt.drv
  /nix/store/hdn7gd3kxnqcq80snclgicd8cg8apymg-treefmt-check.drv