Add README to roslyn-language-server NuGet package by Copilot · Pull Request #82201 · dotnet/roslyn

Copilot · 2026-01-29T00:59:08Z

Add README to roslyn-language-server .NET tool package

Original prompt

This section details on the original issue you should resolve

<issue_title>roslyn-language-server package needs a readme</issue_title>
<issue_description>The roslyn-language-server .NET tool (Microsoft.CodeAnalysis.LanguageServer.csproj) needs a readme describing the tool. It should be bundled with the package</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes roslyn-language-server package needs a readme #82200

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

dibarbet · 2026-01-29T01:13:26Z

+
+## Overview
+
+The `roslyn-language-server` is a .NET global tool that provides rich language features for C# and Visual Basic through the Language Server Protocol. It powers editor integrations including the [C# extension for Visual Studio Code](https://marketplace.visualstudio.com/items?itemName=ms-dotnettools.csharp) and C# Dev Kit.


@copilot no need to mention 'global' specifically, it's a regular .net tool

Done. Removed "global" from the description. (348e2fc)

dibarbet · 2026-01-29T01:13:58Z

+Install the language server as a .NET global tool:
+
+```bash
+dotnet tool install --global roslyn-language-server


@copilot currently it's in prerelease only, so we need to add the --prerelease flag

Added --prerelease flag to installation command. (348e2fc)

dibarbet · 2026-01-29T01:14:53Z

+
+- .NET 10.0 or later runtime
+
+## Editor Integration


@copilot remove this section, it's already mentioned above.

Removed the duplicate Editor Integration section. (348e2fc)

dibarbet · 2026-01-29T01:15:09Z

+
+- [Roslyn GitHub Repository](https://github.com/dotnet/roslyn)
+- [Language Server Protocol Specification](https://microsoft.github.io/language-server-protocol/)
+- [Common Language Server Protocol Framework (CLaSP)](https://github.com/dotnet/roslyn/tree/main/src/LanguageServer/Microsoft.CommonLanguageServerProtocol.Framework)


@copilot no need to mention this

Removed CLaSP reference from More Information section. (348e2fc)

dibarbet · 2026-01-29T01:15:34Z

+
+## Overview
+
+The `roslyn-language-server` is a .NET global tool that provides rich language features for C# and Visual Basic through the Language Server Protocol. It powers editor integrations including the [C# extension for Visual Studio Code](https://marketplace.visualstudio.com/items?itemName=ms-dotnettools.csharp) and C# Dev Kit.


@copilot remove references to visual basic, it does not provide vb support.

Removed all Visual Basic references. The README now only mentions C# support. (348e2fc)

… up sections Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

JoeRobich · 2026-01-29T01:29:04Z

+
+The language server is designed to be launched by editor clients and typically should not be run directly by end users. It communicates via standard input/output or named pipes.
+
+### Command-line Options


May be good to show which options are required and what the defaults are for optional options

@copilot please check

Updated the command-line options section to clarify that all options are optional and show default values for options that have them. Also added a note that one of --stdio or --pipe should typically be specified. (d88db68)

…E.md Co-authored-by: Joey Robichaud <jorobich@microsoft.com>

Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

jasonmalinowski · 2026-01-29T07:02:10Z

+All options are optional. One of `--stdio` or `--pipe` should typically be specified for communication.
+
+- `--stdio` - Use standard I/O for communication with the client (default: false)
+- `--pipe <name>` - Use a named pipe for communication


Is this how the pipe works? I thought we do the dance where the server allocates the pipe?

we support both

jasonmalinowski · 2026-01-29T07:03:18Z

+
+The language server is designed to be launched by editor clients and typically should not be run directly by end users. It communicates via standard input/output or named pipes.
+
+### Command-line Options


Not sure if we should have some sort of "command line switches are subject to change", since we haven't necessarily given any sort of compat thought to some of these.

@copilot can you add that the command line options could potentially change in the future?

Added a note that command-line options are subject to change in future versions. (1834492)

Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

Initial plan

f001eb3

Copilot AI assigned Copilot and dibarbet Jan 29, 2026

Copilot started work on behalf of dibarbet January 29, 2026 00:59 View session

Copilot AI and others added 3 commits January 29, 2026 01:04

Add README.md to roslyn-language-server package

887cb75

Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

Use empty PackagePath for README per NuGet best practices

b6cb5cf

Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

Update README to reflect .NET 10.0 runtime requirement

e1f543c

Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

Copilot AI changed the title ~~[WIP] Add README for roslyn-language-server package~~ Add README to roslyn-language-server NuGet package Jan 29, 2026

Copilot AI requested a review from dibarbet January 29, 2026 01:10

Copilot finished work on behalf of dibarbet January 29, 2026 01:10

dibarbet reviewed Jan 29, 2026

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Copilot started work on behalf of dibarbet January 29, 2026 01:16 View session

Address PR feedback: remove VB references, add prerelease flag, clean…

348e2fc

… up sections Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

Copilot AI requested a review from dibarbet January 29, 2026 01:20

Copilot finished work on behalf of dibarbet January 29, 2026 01:20

dibarbet marked this pull request as ready for review January 29, 2026 01:27

dibarbet requested a review from a team as a code owner January 29, 2026 01:27

JoeRobich reviewed Jan 29, 2026

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Comment thread src/LanguageServer/Microsoft.CodeAnalysis.LanguageServer/README.md Outdated

JoeRobich reviewed Jan 29, 2026

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JoeRobich approved these changes Jan 29, 2026

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Update src/LanguageServer/Microsoft.CodeAnalysis.LanguageServer/READM…

52d96fb

…E.md Co-authored-by: Joey Robichaud <jorobich@microsoft.com>

Copilot started work on behalf of dibarbet January 29, 2026 01:30 View session

Copilot AI and others added 2 commits January 29, 2026 01:33

Clarify command-line options with required/optional status and defaults

d88db68

Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

Fix inconsistent quoting in telemetry level option

7c48511

Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

Copilot finished work on behalf of dibarbet January 29, 2026 01:35

jasonmalinowski reviewed Jan 29, 2026

View reviewed changes

Copilot started work on behalf of dibarbet January 30, 2026 02:15 View session

Add note that command-line options may change in future versions

1834492

Co-authored-by: dibarbet <5749229+dibarbet@users.noreply.github.com>

Copilot finished work on behalf of dibarbet January 30, 2026 02:19

JoeRobich reviewed Jan 30, 2026

View reviewed changes

Comment thread src/LanguageServer/Microsoft.CodeAnalysis.LanguageServer/README.md Outdated

Add LogLevel values and default

ef52470

dibarbet merged commit 4dd57c6 into main Feb 3, 2026
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dotnet-policy-service Bot added this to the Next milestone Feb 3, 2026

This was referenced Feb 3, 2026

[release/11.0.1xx-preview1] Source code updates from dotnet/roslyn dotnet/dotnet#4463

Closed

[main] Source code updates from dotnet/roslyn dotnet/dotnet#4612

Merged

[release/10.0.3xx] Source code updates from dotnet/roslyn dotnet/dotnet#4605

Merged

dotnet-bot mentioned this pull request Feb 5, 2026

[Automated] PRs inserted in VS build main-11504.62 #82293

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phil-allen-msft deleted the copilot/add-readme-for-roslyn-tool branch February 13, 2026 16:56

dotnet-bot mentioned this pull request Feb 18, 2026

[Automated] PRs inserted in VS build feature.debugger.wix5-11517.161 #82436

Closed

akhera99 modified the milestones: Next, 18.5 Feb 24, 2026


		## Overview

		The `roslyn-language-server` is a .NET global tool that provides rich language features for C# and Visual Basic through the Language Server Protocol. It powers editor integrations including the [C# extension for Visual Studio Code](https://marketplace.visualstudio.com/items?itemName=ms-dotnettools.csharp) and C# Dev Kit.


		The language server is designed to be launched by editor clients and typically should not be run directly by end users. It communicates via standard input/output or named pipes.

		### Command-line Options

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Add README to roslyn-language-server .NET tool package

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Copilot AI commented Jan 29, 2026 •

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