these 3 derivations will be built:
  /nix/store/h4pb75n36zclibxb889j0vai92vzg07j-treefmt.toml.drv
  /nix/store/86v4pw5f6gmbh679zcxk175clwn0kq2j-treefmt.drv
  /nix/store/dryicvp8400aib943kaa0254f7chrp4n-treefmt-check.drv