user/pcmanfm-qt: requires unpackaged gvfs to open Computer or Network, and to have Trash
Selecting "Computer" or "Network", from the Desktop, or the Places sidebar in a Folder window, results in an error simply stating: "Operation not supported".
Looking at xorg-session.log, the only log message that appears is:
file monitor cannot be created: Operation not supported
This is caused by its runtime dependency gvfs
not being packaged. Merging on Gentoo without gvfs
causes the same failure.