As a user, merging for comps.xml types is supported
Ticket moved to GitHub: "pulp/pulp_rpm/2275":https://github.com/pulp/pulp_rpm/issues/2275
DNF and libcomps support merging for package groups, categories and environments.
User's expectations are likely to match the DNF behavior, so Pulp should do the same.
Needs to be defined. Check the libcomps behavior based on their tests.
Some documentation about DNF's comps-merging behavior is being worked on here: https://github.com/rpm-software-management/libdnf/pull/1350/files#diff-f313c151f0caffdb2b4fe4a02adf2bde652498e2cb1d29296d153e67b7c29e77R26-R36