[gentoo-user] parallel emerge operations

[Eric S. Johansson]

last time I checked, one could not do two or more emerges at the same 
time.  Which raises the question would be OK to do an emerge fetch in 
one process and a straight emerge on the same set of files on a second? 
 The rationale behind this is that if you can be fetching files prior 
to the time you need them, it might make the build process faster since 
you're now taking advantage of "parallel" operations.

Of course, in order to do it correctly, there would need to be a per 
package lock in order to make sure that only one process was 
fetching/using the package at a time and to block package compilation 
when necessary.

so, is as possible?
---eric
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