Hello,

For anyone else who is on this mailing list, do you know if an Arch Wiki
page exists on this topic, if so could you link it here.

I have checked the DeveloperWiki as well and I can't see any
documentation on this, only how to build for official repository, but
not explaining the layout.

I guess the best option you got so far is to just reverse engineer the
repositories unless someone else knows the location of an ArchWiki page
covering this topic.

Good luck,
Polarian