It is the package list output that should be sorted. The current
output sequence is not logical because '.' is sorted in front of '/'
with input sorting and is not deterministic for different language
environments.
To get a deterministic and logical sorting in environments with
different language configured, env "LC_ALL=C" is set and the produced
strings is that is sorted. To get alphabetic sorting and not a pure
ASCII value sort "--ignore-case" is added.
