Does not seem to work under Windows

[bjornkihlberg]

Hello,

When I run the following program with cabal run under Windows nothing happens.

hello-raylib> cabal run
hello-raylib>

hello-raylib.cabal

cabal-version:      3.4
name:               hello-raylib
version:            0.1.0.0

common warnings
    ghc-options: -Wall

executable hello-raylib
    import:             warnings
    main-is:            Main.hs
    build-depends:      base ^>=4.16.0.0
                      , h-raylib
    hs-source-dirs:     app
    default-language:   Haskell2010

app/Main.hs

module Main where

import Control.Monad (unless)
import qualified Raylib.Core as Raylib

main :: IO ()
main = do
  w <- Raylib.initWindow 480 320 "Hello, Raylib!"
  let loop = do
        shouldClose <- Raylib.windowShouldClose
        unless shouldClose loop
  loop
  Raylib.closeWindow w

I tried updating my NVidia drivers. No change.
I installed raylib and successfully ran one of their examples in C so I suspect there's something wrong with this package or something I've done or missed in the code posted above.

Thank you and kind regards
Björn

[bjornkihlberg]

I tried running hello-raylib.exe inside dist-newstyle/build/x86_64-windows/ghc-9.2.1/hello-raylib-0.1.0.0/x/hello-raylib/\build/hello-raylib/ directly and I got this.

So it says (writing this for poor souls using a search engine)

The code execution cannot proceed because libwinpthread-1.dll was not found. Reinstalling the program may fix this problem.

which is a clue.

[bjornkihlberg]

I got it to work with this solution.

The issue is that libwinpthread-1.dll is not available on the PATH when trying to run your raylib application. It looks like Windows users using Nim had the same problem.

Here are the steps I did explicitly:

1. I use ghcup which keeps msys2 in its installation folder so I added C:\ghcup\msys64 to my PATH which allows me to open the msys2 executable. I don't think this is strictly needed but I did it so I'm writing it down here.
2. I also added C:\ghcup\msys64\mingw64\bin which is actually needed for raylib to work.
3. Then I ran msys2 and in it's shell ran this command

   $ pacman -Syu
   

   which updates the current libraries. After it's done it wants to shut down the shell. Accept and start it up again.
4. Then I ran these commands

   $ pacman -S msys2-keyring
   $ pacman -Syu
   $ pacman -S base-devel mingw-w64-x86_64-toolchain
   

   I had issues with some PGP signatures so I had to install msys2-keyring and then run another system update to make them work. Note that I didn't need to restart the shell this time!
5. I exited out of the shell and cabal run worked.

My program behaved funny but it wasn't the fault of raylib. It was because I didn't invoke beginDrawing and endDrawing which I assume polls the window for events.

Anyway, I though I'd leave this here in case anyone else runs into this.

[Anut-py]

Great, I'm glad you could find a solution! I'll add a link to this in the readme.