On opening a file, haskell-doc opens several files defined in import section

[vlatkoB]

Hi,
In a Yesod project, on opening Application.hs file, haskell-doc automatically opens Import.hs and Foundation.hs (which is imported from Import.hs). So, instead of having just one intended buffer (Application.hs), there are two more unwanted buffers opened.
If haskell-doc is not turned on, it doesn't happen.

Is this a bug or a feature? :-)
Possible to turn off?

br,
vlatko

[gracjan]

This seems to be a function of projectile no haskell-doc. Can you confirm that haskell-doc has nothing to do with this?

[vlatkoB]

@gracjan When I do not turn-on-haskell-doc, only one file is opened. I tried turning off everything but haskell-mode, so I think it is haskell-doc. I noticed it on a plain Yesod app. This might be specific because all three files, Application.hs, Foundation.hs and Import.hs are in the project root, not in src dir.

[gracjan]

This is super strange. Do we know what mixture of functionalities cause this interaction?

[vlatkoB]

Just discovered what's blocking answering the haskell-process-suggest-* questions so I have to C-g 3 times to unblock/unfreeze, and than it leaves the answered letter ('y','n') at point in buffer. It is 'haskell-doc'.
I turned all other packages off, left just haskell-mode, and turned haskell-doc on/off.
Emacs is 24.5.1 on Arch, and all emacs packages updated. Not using ghc-mod.
Anyone else have such problems?

[vlatkoB]

And another discovery. If haskell-doc is not loaded, emacs freezes with message "Scanning declarations...". And never ends. Again, 3 x C-g allows to continue.

EDIT: I made a workaround for this problem.

[vlatkoB]

Found the culprit for opening other files. It is haskell-doc-show-global-types. When set to t, it opens files. Setting it to nil, other files are not open.
Closing this issue.

[gracjan]

vlatkoB: Can you add some documentation in haskell-mode.texi about this?

[vlatkoB]

I'm rather busy right now, but I do not think there is a need for that. Customize for Haskell Doc Show Global Type says clearly:

Haskell Doc Show Global Types 
   If non-nil, search for the types of global functions by loading the files.
   This variable is buffer-local.

Another question is should this be done in another way?

[gracjan]

It is good enough in this case. Thanks.