these 3 derivations will be built:
  /nix/store/r42pvv7lq03i0lfl2kpsm2bsk53s5mah-treefmt.toml.drv
  /nix/store/2krgk29zc8v58p0iafhqff2g7lriwicx-treefmt.drv
  /nix/store/dllibcm2rl3yhxx3jy13dz2wyrkg1yrp-treefmt-check.drv