[GHC] #13315: Compile broken on new MSYS2

[GHC]

#13315: Compile broken on new MSYS2
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        Reporter:  Phyx-             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:
       Component:  Build System      |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:
 Type of failure:  Building GHC      |  Unknown/Multiple
  failed                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Phyx-):

 The only workaround I have found so far that works reliably is forcing the
 mounts to be text mounts. My `/ect/fstab` contains

 {{{
 none / cygdrive text,posix=0,noacl,user 0 0
 C:/TeamCity/buildAgent/work /c/TeamCity/buildAgent/work ntfs
 text,posix=0,noacl,user 0 0
 }}}
 It seems to be important to also force the `/` to be a text mount. The
 tools seem to look at the path they're in to determine how to behave. note
 that the output of `mount` does not reflect the change of the `/` mount,
 but it does work.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13315#comment:1>
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