these 3 derivations will be built:
  /nix/store/bgf7s1f475hlchh6v8j12q91r68ipzmj-treefmt.toml.drv
  /nix/store/wzibgy8i2k1ckyyjcrwl94x6kq3jz2cq-treefmt.drv
  /nix/store/9qylvz4rx83mwy7n1xhnw45cw9p9gpbg-treefmt-check.drv