[mitjam]

MyST (https://myst-parser.readthedocs.io/en/v0.15.1/index.html) lets you write in markdown and still use roles and directives provided by Sphinx and its extensions.

[mr_mitm]

The author mentions MyST while acknowledging that rst is ugly. I also find MyST to be a sweetspot between comfortable syntax and expressiveness, so I wonder why the author doesn't prefer MyST over rst and common mark.