Interactive mode fails to load files on windows

[anakreontas]

The project has a cabal file. From the command line cabal build works fine. When loading a file in ghci however C-c C-l the process fails with the following messages recorded in *Messages* buffer:

error in process filter: haskell-process-send-string: Writing to process: invalid argument, p4
error in process filter: Writing to process: invalid argument, p4
The Haskell process `p4' has died. Restart? (y, n, l: show process log) y
The Haskell process `p4' has died. Restart? (y, n, l: show process log) l

The name of the cabal file is p4.cabal.

[gracjan]

@anakreontas: Can you check if this is really a Windows only problem or does it happen on Linux also?

[anakreontas]

Hi Gracjan,

I work on the same project on a Windows and Linux machine. Same files
and cabal configuration in both cases. The problem only happens on
Windows.

Let me know if I can provide additional info.

Regards

[gracjan]

Thanks, good to know.

[gracjan]

@anakreontas: Can you set debug-on-error to t and reproduce the case again? Can you also give the p4.cabal file and other files that are required to reproduce the issue?

[anakreontas]

Hi.

I set debug-on-error. Now I have a different version of the haskell-mode and it behaves differently. The only message reported in Messages is:
The Haskell process `p4' has died. Restart? (y, n, l: show process log)

I tried all options. With 'y' the process dies again. 'l' shows an empty buffer.

From command line 'cabal build' and 'cabal repl' succeed. Find attached the cabal file.

Regards

p4.zip

[gracjan]

Thanks!