1. Install Arch LinuxIf you already install the arch linux, you may skip this section. Just install Arch Linux follows the official wiki without installing xorg.
2. Install nouveanBy default, the nouvean module should be loaded after you installed the Arch Linux. You can use the following command line to double check if the module is loaded.
lsmod | grep nouvean
If it's loaded, you can continue installing the nouvean driver. Follow the wiki page to finish that.
After that, reboot your linux and then check if the module is loaded again.
Now it's the time to install xorg. Follow the wiki page to finish your installation.
3. Install xorg
After the installation, I still reboot my linux and check if the nouvean is loaded. But I guess you can skip this step.