[arch-dev-public] Starting x86_64_v3 port

[Allan McRae]

Hi all,

You may remember long in the past we discussed adding an x86_64_v3 port. 
  From memory, pkgstats shows this will benefit ~2/3 (or 3/4?) of our 
users!  So lets get this underway!

Apart from tooling (devtools/dbscripts), we need to make some decisions.

My plan is to seed the x86_64_v3 repos with x86_64 packages and then 
they get replaced as updates/rebuilds happen (potentially supplemented 
with a rebuild party).  Pacman 6.0 can handle this.  This is not a 
perfectly clean new port, but is substantially less of a burden than 
releasing a pure x86_64_v3 port.  Our .BUILDINFO files do record the 
package architecture, so this mixture should not affect (e.g.) our 
reproducible builds etc.


The decision to be made is who will package for this repo?  I think 
these are the options:

A) packagers upload both x86_64 and x86_64_v3 to the repos. Our build 
server will help those without x86_64_v3 machines.

B) we recruit some packagers to build the x86_64_v3 packages.

C) Some combination of A+B.


My understanding is our x86_64 port started with B, then C, then A.

I think with our build infrastructure now, we can start with A, but that 
is more of a burden for packagers.  I doubt it will be much of a burden 
as x86_64_v3 specific build issues are unlikely.

Is there any particular objection to requiring packagers upload both 
architectures?

Allan