I've shaved two yaks this weekend:
Ported the NPackage
installcommand to F#. There shouldn't be any visible change in the application: rather, F# lets me write more succinct code for handling HTTP and package dependencies. (Specifically, I was able to replace a lot of my boilerplace C# code with a computation workflow that takes care of deciding which files need to be downloaded again and which ones can be left alone.)
Set up an instance of TeamCity to take the source code from GitHub and build binaries for me. This isn't a version 1.0 release yet, but you're welcome to download the binaries and help me test them.
PS last week I promised I'd implement package dependencies. I haven't done that yet.
PPS here's another .NET packaging system to look out for: Sebastien Lambla's OpenWrap