these 3 derivations will be built:
  /nix/store/fxkasjcv1p4x5lrm0vxm1gqp7v21qdf1-treefmt.toml.drv
  /nix/store/a028mx054gmg3mg3kz0bzynigpf72f72-treefmt.drv
  /nix/store/zmkqbys9lhdghcill64ygdfj1vfsfd8d-treefmt-check.drv