https://hackage.haskell.org/package/hnix
https://github.com/haskell-nix/hnix

articles
2018
https://mmhaskell.com/blog/2018/5/7/bayhac-2018
https://mmhaskell.com/blog/2018/5/21/nix-haskell-concepts-for-package-managment
https://mmhaskell.com/blog/2018/5/28/hnix-enhancing-nix-with-haskell