Inferior-haskell load file still possible?

[Yeah Haskell-interactive has superceded the older inferior-haskell -- For various reasons I currently need to stay with the older inf-haskell]

Earlier there used to be an `inferior-haskell-load-file`
And one could customize C-c C-l to bind to either the newer or the older

Now I cant find the customization or even the `inferior-haskell-load-file` function

Is it still possible to call the inferior code?

Start by searching the current Emacs Lisp sources for `inferior-haskell-load-file`, `inferior-haskell`, `inf-haskell`, and the `C-c C-l` binding or customization. Trace whether the older inferior code remains available and determine the documented way to call it, or whether the requested compatibility work is still needed.

Written by the indexing model from the issue text.