been poking around with GNOME's desktop trying to get things setup the way i want and found a few bits i want to track:

Desktop Files

/usr/share/desktop-directories/ and ~/.local/share/desktop-directories/
- no longer supported with GNOME 45!!
- only Categories supported are `Utility`, `System`, and `Sundry` (which is like “miscellaneous”).
/usr/share/applications/ and ~/.local/share/applications/
- contains .desktop files that dictate the paths and metadata for apps
- e.g., ./org.gnome.clocks.desktop:
```
[Desktop Entry]
Name=Clocks
GenericName=Clocks
...
Categories=GNOME;GTK;Utility;Clock;
...
```
after mucking with any of these be sure to run sudo update-desktop-database