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Install an earlier (supported) version of Arch, or use a different distro are the options to try before a landfill.

That's not how Arch works... ;)

How does Arch work?

Arch is rolling release; there isn't really an older version that you can go back to, the installer just fetches the latest versions of the packages.

Of course, there's the Arch Linux Archive, which lets you sync packages as they were on a particular date.

Obviously, but there are also full offline images. Have you never used Arch before?