these 3 derivations will be built:
  /nix/store/vqih2ik2ncwbbl4pl1g7d1zxgqbwy49v-treefmt.toml.drv
  /nix/store/xajqjdwkhwgf52mswqngvzmf2hhlal0m-treefmt.drv
  /nix/store/4fzxjsfld5iqazlyjld5zpyj3xa5p7kj-nix-shell.drv