Published package for the roslyn Microsoft.CodeAnalysis.LanguageServer feature

[zaphar]

Summary

Currently it looks like the only documented way to obtain the C# Dev Kit and then have it download it. The assemblies don't appear to be published publicly anywhere. Ideally this would be published in NuGet so other lsp supporting editors could use it just like Omnisharp.

Background and Motivation

Support for the new LSP outside of VSCode. Wider usage of the LSP. Further adoption of the C# language.

Proposed Feature

Publish the Microsoft.CodeAnalysis.LanguageServer assembly publicly somewhere.

This was the only issue type I could find for this so hope it's the right category.

[zaphar]

Any chance this could get a look from someone? I would even be happy to work on it if I get some guidance. The lack of a published assembly makes the C# IDE experience much worse in non vs-code editors which sort of defeats one of the main benefits of having an LSP.

[dibarbet]

@zaphar we haven't published the packages to nuget.org, but they are available on this azdo feed, for example https://dev.azure.com/azure-public/vside/_artifacts/feed/vs-impl/NuGet/Microsoft.CodeAnalysis.LanguageServer.win-x64/overview/4.11.0-3.24318.7

The package name is Microsoft.CodeAnalysis.LanguageServer.<platform_name>. There is also a Microsoft.CodeAnalysis.LanguageServer.neutral package that should work on any platform (though doesn't have heavy testing of it).

There is also a Microsoft.CodeAnalysis.LanguageServer package, but it is no longer updated should be considered deprecated.

If you're taking a dependency on the package, I recommend saving them to your own feed as versions are not kept around forever.

We don't have any explicit instructions on consuming the language server, but hopefully the C# extension code that consumes it might be helpful

1. Restoring the packages - https://github.com/dotnet/vscode-csharp/blob/main/tasks/offlinePackagingTasks.ts#L71
2. Starting the server - https://github.com/dotnet/vscode-csharp/blob/main/src/lsptoolshost/roslynLanguageServer.ts#L493

Closing this issue, but feel free to ping me directly on this if you have other questions.