these 3 derivations will be built:
  /nix/store/5g3xcnb71r0mglm821pcz4p2xzdh193x-treefmt.toml.drv
  /nix/store/2i5h4xqg21730v7ha67hm88i7fdpcaq3-treefmt.drv
  /nix/store/yaa0k2ihvl2snxzzkc1ijlsqlna9hrqm-treefmt-check.drv