these 3 derivations will be built:
  /nix/store/msdwvghhbwh39nqxd8wz2dp13hl1hx4j-treefmt.toml.drv
  /nix/store/a2mw1n22li9iwmssx811rm47v2y5zy88-treefmt.drv
  /nix/store/7lryn19jla2m1ah58m92l5pfjn32ypi5-treefmt-check.drv