these 3 derivations will be built:
  /nix/store/69alxppr4fhp6ajwsvcbnbmq61q9m3c6-treefmt.toml.drv
  /nix/store/69hmzr9pmxqiibj5grnhq2mq59ww5v29-treefmt.drv
  /nix/store/v1jw5vldnclwhycad5jz04qjvww591qw-treefmt-check.drv