these 3 derivations will be built:
  /nix/store/nn8sc8w1cvj9vclwksx3w8z1575qg90f-treefmt.toml.drv
  /nix/store/1nlra634in0fqlpjvx5ljvx6ap9pzxsx-treefmt.drv
  /nix/store/nvdmxh66ixcg5jczlpliiil4n8kd7z2r-treefmt-check.drv