What's the status on the upstream work here? Is it worth waiting for a
new upstream release, or is it better to go ahead and package 2.11?
Could the fixes for mapnik be applied to the 2.11 packages as patches,
or are the changes too extensive for that?
Note that this FTBFS has been (temporarily) resolved in the latest
Debian packages of 2.10 with patches disabling mapnik in the build.
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