Comment 9 for bug 1407616

2015-01-04T21:46:21.118987+00:00 notice: dpkg: regarding .../base-files_6.5ubuntu6.7_amd64.deb containing base-files, pre-dependency problem:
2015-01-04T21:46:21.118987+00:00 notice: base-files pre-depends on awk
2015-01-04T21:46:21.118992+00:00 notice: awk is not installed.

Actually this is not a problem the essential packages (such as base-files) can work even without configuration.
Also awk (implicitly) depends on base-files, so in order to break the dependency loop base-file is installed before awk.