# it seems there's no need to put sxiv.desktop into ~/.local/share/applications/ if there exist sxiv.desktop in /usr/share/applications
# no need to use xdg-mime to install it if already exist?
# but if you what to create new .desktop desktop entries with new name, you need to put it in ~/.local/share/applications/

[Default Applications]
application/pdf=org.pwmt.zathura.desktop;
image/gif=nsxiv.desktop;
image/jpeg=nsxiv.desktop;
image/png=nsxiv.desktop;
inode/directory=file.desktop;