[GHC] #15121: make install fails in 8.5

[GHC]

#15121: make install fails in 8.5
-------------------------------------+-------------------------------------
           Reporter:  aspiwack       |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Build System   |           Version:  8.5
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 On a fresh clone of GHC's master [
 79c4f10e4928c37bf4bbad974be0bd693df2d2b9 ].

 The following steps

 {{{
 ./boot
 ./configure
 make -j6
 make install
 }}}

 Fail at the install phase with

 {{{
 "inplace/bin/ghc-cabal" copy libraries/ghc-prim dist-install "strip" ''
 '/usr/local' '/usr/local/lib/ghc-8.5.20180503'
 '/usr/local/share/doc/ghc-8.5.20180503/html/libraries' 'v p dyn'
 Installing library in /usr/local/lib/ghc-8.5.20180503/ghc-prim-0.5.2.0
 dist-install/build/HSghc-prim-0.5.2.0.o: copyFile: does not exist (No such
 file or directory)
 ghc.mk:996: recipe for target 'install_packages' failed
 make[1]: *** [install_packages] Error 1
 }}}

 No `HSghc-prim-0.5.2.0.o` has been built, indeed, but a `libHSghc-
 prim-0.5.2.0.a` exists. I don't know if it's relevant.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15121>
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