these 3 derivations will be built:
  /nix/store/3wvngrslxixwsj0vanjmyksa44sxsbyl-treefmt.toml.drv
  /nix/store/8xy819c2ssm714jxvg7yfg1ah94dhbgd-treefmt.drv
  /nix/store/wlcrz4svj5q1acsdwc0naamq9j1hdv32-treefmt-check.drv