I just tried out the hugo convert toTOML command on a repo and it worked quite nicely with one nit:
I prefer my TOML not to be indented (it’s not required, avoids ‘tabs-vs-space’ debate (and how many spaces if you do use spaces), and I think it’s cleaner). I will of course, for now, post-process, but I did a search of the issues on the Hugo GitHub repo and didn’t see anyone mention this.
I wanted to ‘follow the requested procedure’ and am posting here before creating an issue for a feature request.