render port is being replaced with xorg-renderproto port

[Emmanuel Hainry]

Citando Ryan Schmidt :
> This message is relevant to anyone using ports that until now depended on 
> the render port:
>
> * cairo / cairo-devel
> * gthumb
> * gtk2
> * libgdiplus
> * rxvt-unicode
> * wine / wine-devel
> * xrender
>
> The render port has been replaced with the xorg-renderproto port. They 
> are the same software; the latter is just a newer version. So we are 
> removing the render port.

Don't we have a better way of dealing with port name changes (or similar
issues)? This change creates two conflicting ports, if one of the
dependents is not updated, it will mean some ports (potentially half of
the ports related to X) won't be installable. 

Isn't it possible to update render to a pseudo newer version that has no
file but depends on xorg-renderproto? Or else to have some kind of
"superseding" mechanism?

Best,

Emmanuel
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