The customizations I make to my steam deck, primarily to run OBS in game mode

steamos-customizations.sh

#!/bin/sh

set -e

sudo steamos-readonly disable

sudo pacman-key --init
sudo pacman-key --populate

sudo steamos-unminimize

sudo pacman -S gstreamer-vaapi gst-plugin-pipewire libpulse gst-plugins-base-libs gst-libav gst-plugins-base gst-plugins-good gst-plugins-bad mednafen git fakeroot make patch cmake pkgconf obs-studio libva-mesa-driver onboard k3b python-aenum python-colorama python-aioconsole python-websockets

# packages that need to be repaired make compilation work:
# sudo pacman -S glibc sdl2 linux-api-headers libglvnd gstreamer glib2 libsysprof-capture pcre2 libffi libunwind libelf zlib zstd xz orc libxcb wayland libx11 xorgproto glslang libinih openal libusb spirv-tools

# git clone https://github.com/madewokherd/pkgbuilds
cd ~/pkgbuilds

for package in InputRedirection-SDL obs-vkcapture obs-gstreamer; do
    if ! test -e $package; then
        git clone https://aur.archlinux.org/${package}.git
    fi
    (cd $package && git fetch && git switch -f origin/HEAD --detach && git clean -fxd && makepkg --syncdeps && sudo pacman -U ./*.zst)
done

# For screen capture on OBS in game mode, create a GStreamer source with a pipeline of:
# pipewiresrc name=gamescope do-timestamp=true ! queue max-size-buffers=100 max-size-time=1000000000 ! video.