I tried to package the fsharp compiler correctly :

• Compilation of a really basic .fs file works with fsharpc, however I'm getting errors related to missing DLLs when trying to build larger projects.
• The fsharpi interactive mode can be launched but spits out an error about failing to install ctrl-c handler.
• Finally I had to enable networking in solbuild to get this working, as the build script fetches everything through NuGet.

This is still a work in progress, and clearly needs more work before being made available.
I'm just submitting this to propose a working base for further improvements.