these 3 derivations will be built:
  /nix/store/2mq9dawb456jjwl4h0kd5k6194d2ml6j-treefmt.toml.drv
  /nix/store/0z1n1l1332dqb4krbgy6wklhhfykbbd2-treefmt.drv
  /nix/store/pj8z41l90kr3avpxm2rkqnh296h226i3-treefmt-check.drv