[GHC] #12162: Concatenation of type level symbols missing

[GHC]

#12162: Concatenation of type level symbols missing
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        Reporter:  augustss          |                Owner:  phadej
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2632
       Wiki Page:                    |
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Comment (by dfeuer):

 Lennart, do you think you could give a bit more info about why you need
 this, for documentation purposes if nothing else? Also, I'm curious
 whether we could ''lose'' anything by revealing that `Symbol` is anything
 more than ordered. I don't know of anything, but that doesn't mean there
 isn't anything. Finally, are there other operations on symbols that would
 be useful?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12162#comment:14>
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