Comment 4 for bug 446004

The policy Matthias linked also says "[T]hese directories must be created and removed by the postinst and prerm maintainer scripts.... These scripts must not fail if either of these operations fail. " Since the installation of python31-minimal fails when /usr/local/lib is not writeable, I believe this is a valid bug. Attached is a patch to fix the postinst script per the directions in the Debian policy manual (9.1.2).