At this point our MSBuild project files are hand-crafted, and are best edited by hand.  You can use the GUI to get a general idea of what the changes should be, but it just creates far too much spam to really be usable.

This should be about a 2 line change, but the current patch is several hundred lines of spam.  Have a look at PCbuild/pyproject.props:41 for where the change should be made.