What I'm trying to achieve
I have a p-table with expandable rows, which I need to be able to group. The groups themselves do not need to be expandable and should always show all items within them. The rows within the groups should expand.
Stackblitz example
Here is a janky solution with nested tables in Stackblitz which demonstrates the kind of thing I want to achieve (except that the columns don't line up and it should be all in one table so that sorting and filtering etc works as it should).
Where I've got to so far
I have been able to make a table with expanding rows and a table with grouping, but I just can't find a way to get both features to play nicely together since both row expand and row groups use the same dataKey and ng-template "rowexpansion".
The docs imply that row groups should not be treated as expandable unless expandableRowGroups is present, but this doesn't actually seem to be the case.
I feel like I'm going in circles here, and I can't find much about this online except for a tangentially related five year old forum thread which is now just broken links.