Rosetta Code:Village Pump/New reports

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New reports
This is a particular discussion thread among many which consider Rosetta Code.

Summary

Report: tasks not implemented in a category

Discussion

Is it possible to define a new report here ?

E.g. I made a Category:Simple (with "really simple tasks"), and the report should list all languages that have not covered them.

Also, for a single language, much like "Reports:Tasks_not_implemented_in_AWK", a report "Reports:Simple_Tasks_not_implemented_in_AWK", listing the tasks listed in Category:Simple that have not been done yet in AWK.