these 3 derivations will be built:
  /nix/store/prh29y4v47wswra3yjmyg34cly39f04i-treefmt.toml.drv
  /nix/store/z053i5whndgfv40xwisnn7vvyzqyssfm-treefmt.drv
  /nix/store/bn9d06c3h2yflm9bkkp17hnj4p8ai8g8-treefmt-check.drv