Install & use NVK over NVIDIA drivers in cachyos

commands.sh

# 1. Install NVK userspace (Mesa nouveau Vulkan driver, + 32-bit for Steam)
sudo pacman -S --needed vulkan-nouveau lib32-vulkan-nouveau

# 2a. Un-blacklist nouveau by shadowing the proprietary file from /etc
#     (/etc/modprobe.d wins over /usr/lib/modprobe.d for the same filename)
sudo tee /etc/modprobe.d/nvidia-utils.conf >/dev/null <<'EOF'
# Shadows /usr/lib/modprobe.d/nvidia-utils.conf to drop "blacklist nouveau".
# Delete this file to restore the proprietary nvidia driver.
EOF

# 2b. Stop the proprietary nvidia modules from binding the GPU
sudo tee /etc/modprobe.d/nvk.conf >/dev/null <<'EOF'
blacklist nvidia
blacklist nvidia_drm
blacklist nvidia_modeset
blacklist nvidia_uvm
EOF

# 3. Rebuild initramfs and reboot into nouveau + NVK
sudo mkinitcpio -P
sudo reboot