these 3 derivations will be built:
  /nix/store/ikb1diwihban6mfifjy15mnf9p5jksbd-treefmt.toml.drv
  /nix/store/hmlbckr4kv7d5zakdpjpwaap2w8z74dy-treefmt.drv
  /nix/store/idgz4z6g8bv7whm7dygnwy7y48cay834-treefmt-check.drv