notquiteamonad

I have it working on GitHub Actions in samueldple/date_time if that's of interest to anyone using [this workflow](https://github.com/samueldple/date_time/blob/master/.github/workflows/coverage.yml)

Hey, not sure if this is helpful but I've written a blog about my experience using hal here: https://notquiteamonad.com/blog/2021-02-15-writing-aws-lambdas-in-haskell

A real-world example I'm working with where this occurs - I have a custom `Accounts` type and wish to document each constructor, though not the type itself. My first attempt...