these 3 derivations will be built:
  /nix/store/7ckr7w8016x0g9yzsabfbm6c2bz9vjr4-treefmt.toml.drv
  /nix/store/gzmszbfsdff2b47sbccglb2diwcqlsd4-treefmt.drv
  /nix/store/fdhdlx41y2ca1h2mmpq05l8c9cf0n9lr-treefmt-check.drv