@yochananmarqos @anlorsp Thanks, I've added libxtst libinput xcb-util-wm openvr libdisplay-info to the depends() now.
@Yo-Yo Try reinstall sdl2-compat?

@detian: This fails to build in a clean chroot as it's missing the following dependencies: libxtst, libinput & xcb-util-wm.

Also if openvr and libdisplay-info are present, it will use the system versions instead of the subproject and require them as dependencies.

@Yo-Yo: sdl2 is already a dependency. Do you have sdl2-compat installed?

@detian I really appreciate your contribution here in AUR. I use many of the packages you maintain.
Gamescope seems to be riddled with bugs.Even worse if nvidia in use. Now I get

../gamescope/src/Backends/SDLBackend.cpp:12:10: fatal error: SDL_clipboard.h: No such file or directory
   12 | #include "SDL_clipboard.h"
      |          ^~~~~~~~~~~~~~~~~

Dependency libxtst missing.

gamescope/src/meson.build:8:11: ERROR: Dependency "xtst" not found, tried pkgconfig and cmake

@Yo-Yo Old bug actually: https://github.com/ValveSoftware/gamescope/issues/1662
Use env ENABLE_GAMESCOPE_WSI=0 gamescope -F fsr -- vkcube for apps (mostly Vulkan apps) that are affected to work, or run gamescope in tty.
Disabling Gamescope WSI will broken HDR, but if you are on X11 then it's fine, Xorg can't do HDR anyway. I have now added a message about this after installing this package.

no chroot, but I use SRCDEST=/home/Yo-Yo/my_pkg in /etc/makepkg.conf
After update updpkgsrcs 0.1.6-1 error was

==> Starting prepare()...
  -> Retrieving git build dependencies...
Failed to update '/tmp/makepkg/gamescope-nvidia/src/gamescope/../../PKGBUILD'. This file does not exist.
error: failed to build gamescope-nvidia-3.16.19-1

I unpacked tarball from AUR in /tmp/makepkg and successfully built the package with makepkg.
Anyway this did not helped by my problem with gamescope.
gamescope -- vkcube works.
gamescope -F fsr -- vkcube fails.
I think because I use X11 and gamescope is builted for wayland.

@Yo-Yo Can't reproduce on my end, do you use chroot? try paru -S --nochroot gamescope-nvidia