How I installed mono 3 and monodevelop 4 on Ubuntu 13.04 with NuGet and F# support

gistfile1.sh

# Add this line to your software sources
deb http://debian.meebey.net/experimental/mono /

sudo apt-get update
# of course, apt-get remove mono-complete first...
sudo apt-get install mono-complete 

# I installed monodevelop from apt just to get all the prereqs
sudo apt-get install monodevelop

# Also, you still need this prereq
sudo apt-get install gnome-sharp2

# Build Monodevelop 4 from source
git clone git://github.com/mono/monodevelop.git
cd monodevelop
git fetch --all   # to get the right tag
git checkout monodevelop-4.0.3.13
./configure --prefix=/usr
make
sudo make install

# To add the NuGet plugin...
# 1. Open monodevelop
# 2. Go to Tools -> Add-in Manager -> Gallery -> Manage Repositories
# 3. Add http://lastexitcode.com/monodevelop-nuget-addin-repository/4.0/main.mrep

# To add the F# plugin...
# 1. Open monodevelop
# 2. Go to Tools -> Add-in Manager -> Gallery
# 3. From your browser, download http://addins.monodevelop.com/Stable/Linux/4.0.3/MonoDevelop.FSharpBinding-3.2.15.mpack
# 4. In monodevelop, click Install From File and select the MonoDevelop.FSharpBinding-3.2.15.mpack that you just downloaded

Additionally libglade2.0-cil-dev needs to be installed. Otherwise you will not be able to compile MonoDevelop.