`windowOpacity` seems broken

[yliceee]

I am using the following code to initialize my renderer:

initRenderer :: SDL.Window -> IO SDL.Renderer
initRenderer window = do
  SDL.windowOpacity window  SDL.$= 0
  putStrLn "Here is the initial opacity: " >> SDL.get (SDL.windowOpacity window)  >>= print 
  renderer <- (SDL.createRenderer window (-1) SDL.defaultRenderer)
  SDL.rendererDrawBlendMode renderer SDL.$= SDL.BlendAlphaBlend
  return renderer

I'm intending for the window to be fully transparent. Instead, it is fully opaque and black. The function prints:

Here is the initial opacity: 
1.0

indicating that the opacity was never affected. Other non-zero values do not affect the window's opacity either.

cabal-version: 3.12
The Glorious Glasgow Haskell Compilation System, version 9.10.2
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