[GHC] #6018: Injective type families

[GHC]

#6018: Injective type families
-------------------------------------+-------------------------------------
        Reporter:  lunaris           |                Owner:  jstolarek
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.4.1
      Resolution:  fixed             |             Keywords:  TypeFamilies,
                                     |  Injective
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:  T6018,
                                     |  T6018fail, T6018rnfail, T6018th,
                                     |  T6018failclosed1, T6018failclosed2,
                                     |  T6018ghci, T6018ghcifail,
                                     |  T6018ghcirnfail
      Blocked By:                    |             Blocking:
 Related Tickets:  #4259, #10832,    |  Differential Rev(s):  Phab:D202
  #10833                             |
-------------------------------------+-------------------------------------

Comment (by Jan Stolarek <jan.stolarek@…>):

 In [changeset:"3cfe60aebb9de2a1d897a111f779eacb6614b7cc/ghc" 3cfe60a/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="3cfe60aebb9de2a1d897a111f779eacb6614b7cc"
 Abstract TFs can have injectivity information

 Summary:
 For abstract type families we incorrectly rejected their injectivity
 annotation.  Fixes #11007.

 Test Plan: #6018

 Reviewers: goldfire, austin, bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D1453

 GHC Trac Issues: #11007
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6018#comment:118>
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