[GHC] #11381: Put injective type families in a separate language extension

[GHC]

#11381: Put injective type families in a separate language extension
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        Reporter:  jstolarek         |                Owner:  jstolarek
            Type:  task              |               Status:  closed
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  8.0.1-rc1
      Resolution:  fixed             |             Keywords:  TypeFamilies,
                                     |  Injective
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:  driver/T11381
      Blocked By:                    |             Blocking:
 Related Tickets:  #6018             |  Differential Rev(s):  Phab:D1750
       Wiki Page:                    |
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Old description:

> Injective type families should only be enabled when language extension
> `InjectiveTypeFamilies` is specified. This extension should imply
> `TypeFamilies`.

New description:

 Injective type families should only be enabled when language extension
 `TypeFamilyDependencies` is specified. This extension should imply
 `TypeFamilies`.

--

Comment (by bgamari):

 It was ultimately decided that the extension name should be generalized to
 `TypeFamilyDependencies`. This renaming was performed in,
 {{{
 commit 78a4c729ecb07c92822625fda15f14a778679452
 Author: Ben Gamari <ben at smart-cactus.org>
 Date:   Thu Jan 14 11:52:10 2016 +0100

     Rename InjectiveTypeFamilies to TypeFamilyDependencies
 }}}
 This has been merged to `ghc-8.0` as well.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11381#comment:4>
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