Doesn't play well with ob-haskell

I'm having to use "17.5" haskell mode to get it to play well with ob-haskell (ob-haskell.el comes with elpa/org-9.8) and do org-mode babel in an org-mode file. haskell.el:

```
;; Copyright © 2014 Chris Done. All rights reserved.
;; 2016 Arthur Fayzrakhmanov
```

Any ideas what's up? I know it's just me and that guy in Botswana that use Haskell Babel, but still...

Start by reproducing the incompatibility with haskell-mode 17.5, ob-haskell.el from org-9.8, and an Org-mode file using Haskell Babel. Read haskell.el and ob-haskell.el to identify the interaction, then confirm the behavior works without requiring the older Haskell mode version.

Written by the indexing model from the issue text.