Atomic portindex

[Joshua Root]

Ryan Schmidt wrote:
> I sometimes have to rebuild the PortIndex locally for testing, and  
> since it takes minutes to do that, I might want to install some port  
> while portindex is running. But this usually doesn't work because the  
> port I want to install usually has dependencies, and the portindex  
> script might not yet have gotten around to adding that port to the  
> new PortIndex.
> 
> I think it would be nice for the portindex script to use a temporary  
> file for the new index, and only move it over the existing PortIndex  
> file when it's all through. Can anyone think of a reason why that  
> wouldn't work or wouldn't be desirable?

Sounds fine to me. Another nice thing to have would be a portindex 
option that just adds or updates the index entry for a given portfile, 
instead of rebuilding the whole thing.

- Josh