AUR is unsupported - no matter Arch or Manjaro
Your leading sentence in the previous topic was
Pamac is build by Manjaro for Manjaro.
Anyone can backport and create a PKGBUILD and publish on AUR - the result is unsupported by Manjaro.
This is the way.
Pamac relies on being run on a Manjaro system - not Arch - therefore your topic was closed.
As Manjaro related questions is not relevant on Arch BBS - your question has no relevance on the Manjaro forum.