these 3 derivations will be built:
  /nix/store/9yisqmrkv3dph96l9waldm12q8sl6shs-treefmt.toml.drv
  /nix/store/apzbr01q60v5cdyrr90dg7m4z650is0n-treefmt.drv
  /nix/store/6kks8pgnyfm23pa4l88gi5sqzykq5gwi-treefmt-check.drv