these 3 derivations will be built:
  /nix/store/qr5jncql8199ajzldrakaa4l0ld7nxgh-treefmt.toml.drv
  /nix/store/c6fyy97y8ssddj16z69c76ii5zq3da2c-treefmt.drv
  /nix/store/zd02k3aj97v7r0438kj1kwd4p46s770g-treefmt-check.drv