these 3 derivations will be built:
  /nix/store/0sb7311syjcs7rv2sap3lahwangc4ybz-treefmt.toml.drv
  /nix/store/0an7787bj91ndb8wb44grah3m7mzwqip-treefmt.drv
  /nix/store/2w5kvnzc3izy5lmqwsrxdpjmqhjpijrg-treefmt-check.drv