[Haskell-cafe] createProcess fails to find executable in Windows

Jesse Schalken me at jesseschalken.com
Thu Oct 25 13:10:53 CEST 2012


What if you ran the program from within the directory that contains
git.exe? Can you check that the PATH environment variable is set correctly
from within the program?

On Thu, Oct 25, 2012 at 10:05 PM, José Pedro Magalhães <jpm at cs.uu.nl> wrote:

> Hi all,
>
> Consider the following program:
>
> module Test where
>>
>> import System.Process (readProcess)
>>
>> main :: IO ()
>> main = readProcess "git" ["describe", "--tags"] "" >>= putStr
>>
>
> In Windows I get the following behaviour:
>
> > git --version
>> git version 1.7.10.msysgit.1
>>
>> > ghc --version
>> The Glorious Glasgow Haskell Compilation System, version 7.6.1
>>
>> > runghc Test
>> Test: git: createProcess: does not exist (No such file or directory)
>>
>
> The same happens with GHC 7.4.2. In Linux, however, it works as expected:
>
> $ git --version
>> git version 1.7.9.5
>> $ ghc --version
>> The Glorious Glasgow Haskell Compilation System, version 7.4.1
>> $ runghc Test.hs
>> Package-2.0-68-gacaf77a
>>
>
> Can anyone reproduce this result in Windows? Is this a bug or am I doing
> something wrong?
>
>
> Thanks,
> Pedro
>
>
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