these 3 derivations will be built:
  /nix/store/ikl4d8mfx7gg66v1w0ca30y610zync7v-treefmt.toml.drv
  /nix/store/jdan41ay7qclqnjq6hq16bsnkjvlpayk-treefmt.drv
  /nix/store/p9chzwjhjniknrs997g3ngxc13gl3afm-treefmt-check.drv