these 3 derivations will be built:
  /nix/store/mbmnbd6vm5s93rvmk9rxk4xa2zhx2cwp-treefmt.toml.drv
  /nix/store/g403xi02g1cpfhp6sf89cnlp7xbpg0kv-treefmt.drv
  /nix/store/h8wxvykvcrn4jcr5vpry83cqihicjax6-treefmt-check.drv