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update windows NUL for ghc 8.6.1

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This should also work with older ghc, since the path is a windows device
namespace path.
This commit is contained in:
Joey Hess 2018-09-22 11:31:55 -04:00
parent 8873cf0789
commit d2c351f547
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1 changed files with 2 additions and 1 deletions
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3
Utility/Process.hs
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@ -249,7 +249,8 @@ devNull :: FilePath
#ifndef mingw32_HOST_OS
devNull = "/dev/null"
#else
devNull = "NUL"
-- Use device namespace to prevent GHC from rewriting path
devNull = "\\.\NUL"
#endif
-- | Extract a desired handle from createProcess's tuple.