Bugzilla Bug 212152

When you try to emerge a file when /var/tmp if full, it will continue to try
and fetch the program repeatedly, even when there is no more free space.

Reproducible: Always

Steps to Reproduce:
1. fill /var/tmp
2. emerge package
3. profit?

Actual Results:  
Printed an out of space error, then retried to fetch immediatly

Expected Results:  
Something a bit more intelligent, like wait awhile before trying to fetch this
same file, or waiting for the space to free up

Small change: this error occures when /usr/portage is full, not /var/tmp.

We can compare os.statvfs(distdir).f_bavail to the current download size and
bail out if it appears that there's not enough space.

That would make more sense, along with a proper message to that effect (either
displayed or emailed).

This is supposed to be fixed in portage-2.2_pre5 or earlier.

This is supposed to be fixed in portage-2.2_pre5 or earlier.