these 3 derivations will be built:
  /nix/store/0xmk4j2a03xavbcv3mn6syz92pd6m9hx-treefmt.toml.drv
  /nix/store/sq3gn43adxnb2q7186vxx2v7qw8zkpl5-treefmt.drv
  /nix/store/gzxll06j3p8pb2fzza2lxms5iad48vq8-treefmt-check.drv