these 3 derivations will be built:
  /nix/store/61gf4vlz5my9l09f1prn1ws1nc0403x3-treefmt.toml.drv
  /nix/store/4rllf0ig061x4168cnh2vkdgxkk1lpxa-treefmt.drv
  /nix/store/zr89qryrbwdwm0mp61lxi5a1w2dhjdnw-treefmt-check.drv