For Google Summer of Code 2021 I implemented support for conversions between TOML and Dhall. You can read more about how that went in this gist: https://gist.github.com/ear7h/78265c4755adc01fa6e6a19e3307ef4d
You can download the binaries from the github release page: https://github.com/dhall-lang/dhall-haskell/releases/tag/1.40.0
And if you’re interested in seeing it in action, I created a tutorial for using Dhall to organize a Tegola configuration file: https://github.com/ear7h/dhall-natural-earth
Feel free to leave any questions and thank you @Gabriel439 and @sjakobi for the support 