> While working on the arch package, I've discovered that it is very
> dependent on having GNU patch.  Ours just will not do the job it
> expects to be done by patch.  So I added the simple dependency on
> devel/patch to the package.

I think the right way to go is to 

 - identify all the GNUisms that break with our patch, then
 - categorize them into missing features/abuses and
 - talk to the Arch maintainers about the abuses while
 - filing PRs against our patch for the missing features

Martin