Extension libraries reference dependencies not found in NuGet feeds

Describe the bug

First of all: Thanks for your great work. Have been using dotnet interactive a lot since the VSCode integration was released and it is a joy to work with ❤❤❤

I just found a little thing. Referencing the packages meant to build extensions as documented in the main Readme (eg. Microsoft.DotNet.Interactive, Microsoft.DotNet.Interactive.Formatting, etc) leads to failing project restores.

Dependencies like System.CommandLine can be fixed when replicating the NuGet.config used in the dotnet interactive repo. Dependencies like FSAutocomplete.Core cannot be fixed as they do not exist in any feeds but only as project references.

I created a repository with two configurations the main branch has a working version of the plugin using your NuGet.config. The broken-references branch uses the global standard. If you want to test this you first have to clean your nuget cache because otherwise it seems as if it would work nicely (which it doesn’t).

I’m working on another extension where the problem is a bit more severe. This Deedle formatter extension is currently blocked from upgrading the packages because I can’t find a workaround for dependencies like FSAutocomplete.Core.

I’m totally fine with using the custom NuGet.config. I just think it should be reflected in the documentation. People using packages from nuget.org are kind of used to having it as the only repo - even for prerelease packages.

Please complete the following:

Which version of .NET Interactive are you using? There are a few ways to find this out:

Version: 1.0.151601+c44fed791093db19261c49b39d7d901e7983a3af Build date: 2020-10-16T22:22:16.0000000Z This doesn’t really connect to my issue though. My pinned .NET Core SDK version is 3.1.403

• OS
  • Windows 10 (working on WSL2 - Ubuntu 20.04)
  • macOS
  • Linux (Please specify distro)
  • iOS
  • Android
• Browser
  • Chrome
  • Edge
  • Firefox
  • Safari
  • Does not apply
• Frontend
  • Jupyter Notebook
  • Jupyter Lab
  • nteract
  • Visual Studio Code
  • Other (please specify)

Screenshots

[jonsequitur]

The goal is that all of the dependencies are on public NuGet going forward as we improve the extension story and docs. We’re trimming down the dependencies list and publishing an updated System.CommandLine soon.

Thanks for being an early adopter!

[WalternativE]

@Alkasai it’s not part of this repo (or Deedle for that matter because it’s currently one of my pet projects). You can find the repo here https://github.com/WalternativE/Deedle.DotNet.Interactive.Extension - there is also a short description on how to get it because it’s currently hosted on MyGet. If you have problems with it let me know (best would be in the repo). Hope this answers your question.