Don't prompt for session on `haskell-process-do-info` etc.

[sboosali]

when run, haskell-process-do-info, always prompts me to choose Haskell session: [my-haskell-session], with the correct default, and I have to hit enter. This stops me from binding it as a callback to mousedown. I'm new to haskell-mode, but most things work, and in particular a session is active and my project compiles.

the relevant call graph seems to be:

   (haskell-process-do-info nil)
-> (haskell-process-do-simple-echo ...)
-> (haskell-interactive-process)
-> (haskell-interactive-session)
-> (or (haskell-session-maybe) (... (or (haskell-session-from-buffer) (haskell-session-choose))))

the calls between (haskell-interactive-process) and (haskell-session-maybe), inclusively, return non-nil when evaluated in any .hs file in my project.

can't haskell mode infer the right session from a project (there is one session per project, yes?), as there is one project per module. Or can I assert that I only have one session open in any Emacs thing (I know the architecture can handle multiple)?

Thank you

[gracjan]

@sboosali: I see that you already did a lot of work to debug this issue. How about you create a pull request using the knowledge that you have and then we go from there?

[sboosali]

okay, I don't have a fix, but let me take another look at this, and see if I can get something working locally.

also, do you have the same issue?

[gracjan]

I haven't tried to reproduce it, I'm working with what you wrote here.

[gracjan]

@sboosali: I tried to reproduce but failed. -do-info and -do-type do not ask me any unnecessary questions.

Can you describe how to reproduce the problem?