[GHC] #12661: Testsuite driver fails on Windows

[GHC]

#12661: Testsuite driver fails on Windows
---------------------------------+--------------------------------------
        Reporter:  bgamari       |                Owner:  Phyx-
            Type:  bug           |               Status:  new
        Priority:  normal        |            Milestone:
       Component:  Test Suite    |              Version:  8.0.1
      Resolution:                |             Keywords:
Operating System:  Windows       |         Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
---------------------------------+--------------------------------------
Changes (by Phyx-):

 * owner:   => Phyx-


Comment:

 I haven't encountered it before but:

 File not Found will also be returned by the system loader when it couldn't
 find a dependency of a library it's trying to load.

 In this case I suspect you've set up the buildbot on a completely new
 Windows install. In which case you're probably missing the proper
 Microsoft C Runtime. (Windows update would eventually get to this).

 According to the docs : https://docs.python.org/3.4/using/windows.html

 Python 3.5 has a dependency on the VC2015 runtime
 https://www.microsoft.com/en-us/download/details.aspx?id=48145

 and Python 3.4 on the VC2008 runtime https://www.microsoft.com/en-
 us/download/details.aspx?id=15336

 The load is probably failing because ctypes loads a dll that needs the
 runtime.

 It should have recorded the missing dependency in the Windows Event Viewer
 as well.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12661#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler