The issue in https://github.com/dhall-lang/dhall-haskell/issues/2161 requires a workaround for the misplaced manpages.
Just ran ```bash ./fetch.py ``` Includes update of `nixpkgs.json` to latest unstable.
This way we won’t forget to do it for months at a time. You’d hope that stuff like this would be possible without jumping through hoops, but this is nix after all. Flakes our salvation or something.