[commit: ghc] wip/T9858-typeable-spj: Improve the error messages for class instance errors (48512df)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : wip/T9858-typeable-spj
Link       : http://ghc.haskell.org/trac/ghc/changeset/48512df5751a07fd503f0ba523e5504d09ee258d/ghc

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commit 48512df5751a07fd503f0ba523e5504d09ee258d
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Fri Mar 20 12:27:59 2015 +0000

    Improve the error messages for class instance errors
    
    See Note [Displaying potential instances].


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48512df5751a07fd503f0ba523e5504d09ee258d
 compiler/main/DynFlags.hs      |   2 +
 compiler/typecheck/TcErrors.hs | 106 ++++++++++++++++++++++++++++++++++-------
 docs/users_guide/flags.xml     |   6 +++
 docs/users_guide/using.xml     |  11 +++++
 4 files changed, 107 insertions(+), 18 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc 48512df5751a07fd503f0ba523e5504d09ee258d