It would be nice to have an AUR helper on our iso like yay-bin or trizen.
We show you how to build yay-bin with makepkg.
We follow the tutorial from above link to build yay-bin in a clean chroot.
We also see if we can improve the building process – we can change parameters of the /etc/makepkg.conf.
On the Arch wiki we see what we can do after making the video.
COMPRESSZST=(zstd -c -z -q - --threads=0)