these 3 derivations will be built:
  /nix/store/bhidb3is9rx00xyhg39f8jihipblp1c9-treefmt.toml.drv
  /nix/store/qsn3xgy4z056f6i68i98hs6bsfdq1wlg-treefmt.drv
  /nix/store/2b3sw7d581ygqk62agl4qrq84baqnnl6-treefmt-check.drv