Emacs stuck on "Initializing..." when loading a Haskell file

[mrkgnao]

Preamble: I am very, very inexperienced when it comes to Emacs. (I'm running 25.0.50 on Ubuntu 14.04.)

So I'm trying to get a little Haskell development environment set up (preferably with stack, but I'm having trouble enough with plain old ghc).

I enabled the haskell layer. Now, whenever I open a Haskell file, Emacs freezes saying "Initializing...". Ctrl-G stops the freezing and shows me the source, and the error log says "File mode specification error: (error "Process not running")".

How do I stop this from happening and hopefully get completion and structured-haskell-mode set up? There's also a lot of lag when I use any motions like j/k/w/b.

Edit: #2142 (comment)
Edit (@StreakyCobra): Related reddit thread

[d12frosted]

Yeah, there is such problem. This is possible duplicate of #2896. It was also briefly discussed in various threads. But that's expectable, since the problem is really annoying.

I understand that this is totally not good solution in general, but you can use my private layer meanwhile. For completion it uses company-ghci - which works well with stack.

(setq-default dotspacemacs-configuration-layers
   '((d12-haskell :variables haskell-enable-hindent-style "chris-done"
                             haskell-enable-shm-support t
                             haskell-process-type 'stack-ghci)))

As for lagging - don't have anything to say, sorry.

[geo7]

@d12frosted is the lag 25.0 related? I can't remember whether you were running 25.0 or not

[d12frosted]

@geo7 No. I am running on 24.5.

[geo7]

@mrkgnao I think I remember you saying that you had got this sorted in the gitter chat?

If so it'd be cool to close this issue, and possibly add a note at the end of your original post mentioning what you did :)

[mrkgnao]

Yup!
#2142 (comment)

[geo7]

@mrkgnao nice one 👍 maybe include that link in the top post (of this issue) and if all's good this can be closed :)

[secwang]

@d12froste 👏

[StreakyCobra]

I've also added the reddit's link to the original post. Everything seems fine as there was no update last 2 months month, so I'll close this one 😄 Feel free to reopen it (or to open a new one) in case of problems.

Edit: I need to learn how to count 😅