Comment 2 for bug 1090977

monodevelop already depends on xterm. Here it's the debian/control:
Package: monodevelop
Architecture: all
Recommends: libglade2.0-cil-dev, libgtk2.0-cil-dev, mono-devel
Depends: gnome-icon-theme (>= 1.1.3),
         monodoc-manual (>= 1.1.9),
         pkg-config,
         xterm | x-terminal-emulator,
         ${cli:Depends},
         ${misc:Depends},
         ${shlibs:Depends}