[GHC] #16109: cabal install H under Windows 10 does not terminate

[GHC]

#16109: cabal install H under Windows 10 does not terminate
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           Reporter:  dsamperi       |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.6.3
           Keywords:                 |  Operating System:  Windows
       Architecture:  x86_64         |   Type of failure:  Runtime
  (amd64)                            |  performance bug
          Test Case:  cabal insall   |        Blocked By:
  H                                  |
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Under Windows 10 using ghc c8.6.3 (Haskell Platform), using cabal to
 install H (HaskellR) stalls after the message "Completed aeson," with ghc
 consuming about 5-10% of the CPU forever. I let it run all night and the
 situation does not change. The command used: 'cabal update; cabal install
 H'. I tried increasing the priority of the ghc process to "realtime." This
 increases the cpu usage from 5% to 10-20%, but still no progress after
 hours (days?).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16109>
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