these 3 derivations will be built:
  /nix/store/gy47sjrvff8k13f6q0gsj61rq3w59cap-treefmt.toml.drv
  /nix/store/sa9l7h3xf8dapgnq1vdm588f4szrprfj-treefmt.drv
  /nix/store/bqa6rgcnh5s2g8wsvhdbh0hsnl40rp4a-nix-shell.drv