2021-01-18 18:18:07 [INFO]: All logs will be stored in /tmp/nvidia-installer.log
2021-01-18 18:18:07 [INFO]: Running the installer in testing mode...
2021-01-18 18:18:07 [INFO]: Updating Nvidia graphics cards database...
2021-01-18 18:18:07 [INFO]: nvidia-installer-update-db --tmpdb
Fetching NVIDIA graphics card ids from nvidia.com ...
==> Latest Production Branch Version: found!
==> Latest Legacy GPU version: found!
Adding NVIDIA graphics card ids to a temporary local database.
2021-01-18 18:18:10 [INFO]: Installing nvidia-dkms driver...
2021-01-18 18:18:10 [INFO]: Removing conflicting packages...
2021-01-18 18:18:10 [INFO]: pacman -Rs --noconfirm --noprogressbar --nodeps xf86-video-nouveau
2021-01-18 18:18:10 [INFO]: Downloading and installing driver packages, please wait as this may take a few minutes...
2021-01-18 18:18:10 [INFO]: pacman -Sqy --noconfirm --noprogressbar nvidia-dkms libvdpau nvidia-settings lib32-nvidia-utils lib32-libvdpau
2021-01-18 18:18:10 [INFO]: Creating /etc/X11/xorg.conf.d/20-nvidia.conf file...
2021-01-18 18:18:10 [INFO]: Installation finished. Nothing has been modified as testing mode was ON.
Looks like it should work, I did this before installing it initially too. I know for a fact that when I was using Manjaro Linux, it was also pulling nvidia-prime as part of the video-hybrid-amd-nvidia-driver-450x-prime driver.