Hi! I encountered the same thing.
When running from the terminal :
i got an ERROR: ld.so: object 'libgtk3-nocsd.so.0' from LD_PRELOAD etc etc

Installed it:
rebooted
It works

PS: I also set the bwrap permissions

Thanx everybody! I got it installed.

I installed all dependencies that were able to install, and then I just installed haskell-X11 and xmonad with the --no-dep option.
As I thought, ghc was enough to be able to run xmonad.

Hmm. It doesn't work for me unfortunately. Installing ghc is not a problem. But when slapt-getting haskell-X11 it tells me it depends on the non-existent haskell package. If I try to build with slapt-src, (either haskell-X11 or xmonad), I get the message that it was unable to find all specified slac...

Thank you. Unfortunately one of the packages it wants to install from the "Package Required" list, is 'haskell'. That is not an existing package. try to install required dependencies first : sudo slapt-get --show xmonad | grep "Package Required:" | tr ',' '\n' | while read -r pac...

Hi all! I am unable to install xmonad for some reason. It tells me that haskell-X11 depends on haskell. Makes sense, but there is no haskell package? I thought I'd install ghc, maybe that would fulfill the haskell dependency, but no :( slapt-get]$ doas slapt-get -i ghc xmonad Reading Package Lists.....