these 3 derivations will be built:
  /nix/store/m2ff5iknngfbj6mmbxfkl58ldrqsflp2-treefmt.toml.drv
  /nix/store/fs4yangyya0qqcmiibhy6m3r8d0r32j3-treefmt.drv
  /nix/store/frfln1xii11g883vjrm3shngj14mr1bv-treefmt-check.drv