[GHC] #7969: -ddump-minimal-imports should preserve imports required to implement standalone derived instances

[GHC]

#7969: -ddump-minimal-imports should preserve imports required to implement
standalone derived instances
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Reporter:  dsf               |          Owner:                  
    Type:  bug               |         Status:  new             
Priority:  normal            |      Component:  Compiler        
 Version:  7.6.2             |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:                  
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Comment(by simonpj@…):

 commit b2cde434bbf3060dc5eda39876e4c9180aea1d1a
 {{{
 Author: Simon Peyton Jones <simonpj at microsoft.com>
 Date:   Mon Jun 17 22:45:28 2013 +0100

     Emit addUsedRdrNames for the datacons in a standalone deriving (Trac
 #7969)

  compiler/typecheck/TcDeriv.lhs |   18 +++++++++++++++---
  1 files changed, 15 insertions(+), 3 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7969#comment:1>
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