I think there was a glitch in my installation of unity. Visual studio always pops up when I try to edit! I go to the install monodevelop and it requires the following:
To install this release, you also need to install the following packages:
They shouldn’t cause any problems. Most likely Microsoft and Mono just haven’t bothered to update the list of system requirements. If .NET doesn’t like a certain version of Windows it won’t allow itself to install, but GTK is basically just libraries in a folder somewhere.
My advice though is to simply use Visual Studio. You’ll be using it about the same way as you would MonoDevelop.
MonoDevelop is ‘built-in’ to Unity-- all I had to do in order to ‘enable’ it was choose ‘MonoDevelop (built-in)’ as the ‘External Editor’ under Unity preferences. I also uninstalled the incredibly bloated Visual Studio installation, which uses something like 10+ GB of disk space…