[Rd] Pb with contrib.url() (PR#9131)

[Seth Falcon]

Simon Urbanek <simon.urbanek at r-project.org> writes:
> Yes, I see, thanks. Given that we supply universal binaries (=should  
> work on all supported archs), we could define mac.binary as macosx/ 
> universal and mac.binary.xxx as macosx/xxx. The default would still  
> be mac.binary.

I like this idea.

> I'm not sure if we really need separate architecture binaries. The  
> only benefit I see is that other repositories which don't have the  
> resources to build binaries for all platforms could provide separate  
> binaries. On CRAN the other directories are just symlinks to  
> universal anyway. Any comments on that? Does anyone use the separate  
> binaries feature?

Allowing folks to host an OS X architecture specific binary seems
worthwhile, but I don't think CRAN-style repositories should have to
have those dirs if they are only hosting universal binaries.

Best,

+ seth