New haskell workflow? [xmonad-contrib package missing]

[Dhananjay Balan]

Hi,

xmonad wm used to be provided via packages x11-wm/hs-xmonad and
x11-wm/hs-xmonad-contrib. contrib contains extra haskell libraries to
configure xmonad.

I can see that this package was removed from ports:
x11-wm/hs-xmonad-contrib||2020-05-26|Deprecated: Haskell libraries get pushed out of the ports tree

Whats the recommended way to get these libraries? I can just build all of this with cabal-install, but that makes having hs-xmonad as a package bit silly.

Thanks,
dbalan