/usr/share/PackageKit/helpers/aptcc/pkconffile.nodiff is in packagekit-backend-aptcc 0.8.17-4ubuntu6~gcc5.4ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | Template: pkconffile/title
Type: title
Description: The configuration file of ${package} has changed.
Template: pkconffile/what_to_do
Type: select
Choices: Install the package maintainer's version, Keep the currently installed version, Show the differences between the current and new versions
Default: Keep the currently installed version
Description: How do you want to handle this conflic?
The configuration file '${forig}' (modified by you or a script) has a newer version.
Template: pkconffile/diff
Type: note
Description: Difference between '${forig}' and '${fnew}'
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