Can you point me to instructions for this setup? I'd love to try F# (having dabbled in Haskell) on macOS, but I keep getting the feeling that F# really needs Visual Studio to shine... which is a feeling which may or may not be accurate.
If you don't want to use mono and want to use MS's new cross-platform version of the .NET Framework, you can use .NET Core [1] (then follow the sibling's advice on using VSCode and Ionide)