Replying to myself for anyone else who finds this

On Tue, Apr 12, 2016 at 5:11 PM, Rustom Mody <rustompmody@gmail.com> wrote:

On Mon, Apr 11, 2016 at 5:19 PM, Ivan Lazar Miljenovic <ivan.miljenovic@gmail.com> wrote:
On 11 April 2016 at 15:03, Rustom Mody <rustompmody@gmail.com> wrote:
>
>
> On Sun, Apr 10, 2016 at 7:33 PM, Gracjan Polak <gracjanpolak@gmail.com>
> wrote:
>>
>> Rustom Mody <rustompmody <at> gmail.com> writes:
>>
>> > The old comint interface and new λ one -- when does which kick in
>>
>> There are quite some people out there using inf-haskell (comint) and
>> larger
>> number of interactive-haskell-mode users.
>
>
> 1. Start in a foo.hs file
> 2. Load file
> 3. I get the lambda interface
>
> Instead
> M-x run-haskell
> I get old interface
>
>
> How do I get one uniform interface?

By not using run-haskell?

:-)

I figured that much out; viz that even if I dont need a file immediately I need to create a dummy hs file and load it.

Started with the minimum setup recommended in the Readme:

(add-to-list 'load-path "~/lib/emacs/haskell-mode/")
(require 'haskell-mode-autoloads)
(add-to-list 'Info-default-directory-list "~/lib/emacs/haskell-mode/")

Now from a haskell file doing C-c C-l

does nothing but tell me to study haskell-mode for more instructions -- O well

So look up haskell mode that has:
For more information see also Info node `(haskell-mode)Getting Started'.

However the Getting started is a broken link -- "No such node or anchor"

It is (info "(haskell-mode)Interactive Haskell")

which has the key bindings needed to get it working