these 3 derivations will be built:
  /nix/store/94q0256waniw65fi7b0jg7fr8fssrvrm-treefmt.toml.drv
  /nix/store/s7lipx56bkl7c9sj4avj6qdapq1k6ard-treefmt.drv
  /nix/store/j7ghyiri17xpbr8flr78d459ybg84f5k-treefmt-check.drv