[GHC] #11208: GHCi doesn't qualify types anymore

[GHC]

#11208: GHCi doesn't qualify types anymore
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        Reporter:  hvr               |                Owner:
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  GHCi              |              Version:  7.11
      Resolution:                    |             Keywords:  regression
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by hvr):

 Replying to [comment:4 simonpj]:
 > How bad is that?  Does tooling really parse error messages?  (If so
 there should be a Better Way!)

 While there *should* be a better way, there isn't yet... GHC doesn't ship
 with anything better than GHC(i) right now

 Here's two ways how this regression affects Emacs' haskell-mode:

  - For warnings about missing type-signatures, Emacs parses the warning
 message and then inserts the extracted missing type-signature
  - Another feature is based on GHCi, which queries the symbol under the
 cursors for its type, and then inserts that above as a type-signature

 There may be other features I may have forgotten about which also require
 to know renamer-information.

 In both cases it's important to know how to qualify (if needed) symbols.
 And in passive mode (e.g. when parsing GHC's warning messages w/o an
 active GHCi session attached) Emacs has no way to query the module
 namespace.

 In active mode (e.g. when using GHCi to resolve/introspect information)
 Emacs uses `:type`/`:browse`/`:info` as well as other commands newly added
 (soon) to GHC 8.0 (see #10874). Those now are missing the module
 qualifications

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11208#comment:5>
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