these 3 derivations will be built:
  /nix/store/1dm21xqx6ykc24rbhqajykc6ifppyhhv-treefmt.toml.drv
  /nix/store/b6srgn793gh1fy3bqp5k9wzzmp3m3csj-treefmt.drv
  /nix/store/hj72666h2kxvl2pydrr84dsbwiyj3jbq-treefmt-check.drv