Can't download Microsoft.CodeAnalysis.LanguageServer due to dependencies in private NuGet feeds

[thomhurst]

Heya,

Trying to use download https://dev.azure.com/azure-public/vside/_artifacts/feed/vs-impl/NuGet/Microsoft.CodeAnalysis.LanguageServer.linux-x64/overview/5.0.0-1.25329.6

However the dotnet restore fails due to not being able to find some specific versions of dependencies.

Are there more public repositories where I can make this work?

If not, could you consider adding somewhere where we can download them publicly?

Thanks

[CyrusNajmabadi]

What dependencies can it not find?

[thomhurst]

INFO 2025-06-29 23:39:57,051 Feeds used:
INFO 2025-06-29 23:39:57,051 https://api.nuget.org/v3/index.json
INFO 2025-06-29 23:39:57,052 https://pkgs.dev.azure.com/azure-public/vside/_packaging/vs-impl/nuget/v3/index.json
INFO 2025-06-29 23:39:57,052 /home/thomh/.dotnet/library-packs
INFO 2025-06-29 23:39:57,053 Installed:
INFO 2025-06-29 23:39:57,054 135 package(s) to /tmp/tmp706o7zem/temp.csproj
INFO 2025-06-29 23:39:57,054 Done executing task "RestoreTask" -- FAILED.
INFO 2025-06-29 23:39:57,055 1>Done building target "Restore" in project "temp.csproj" -- FAILED.
INFO 2025-06-29 23:39:57,055 1>Done Building Project "/tmp/tmp706o7zem/temp.csproj" (Restore target(s)) -- FAILED.
INFO 2025-06-29 23:39:57,056 Build FAILED.
INFO 2025-06-29 23:39:57,056 "/tmp/tmp706o7zem/temp.csproj" (Restore target) (1) ->
INFO 2025-06-29 23:39:57,057 (Restore target) ->
INFO 2025-06-29 23:39:57,057 /tmp/tmp706o7zem/temp.csproj : warning NU1603: Microsoft.CodeAnalysis.LanguageServer.linux-x64 5.0.0-1.25329.6 depends on Microsoft.VisualStudio.Telemetry (>= 17.14.8) but Microsoft.VisualStudio.Telemetry 17.14.8 was not found. Microsoft.VisualStudio.Telemetry 17.14.18 was resolved instead.
INFO 2025-06-29 23:39:57,058 /tmp/tmp706o7zem/temp.csproj : warning NU1603: Microsoft.CodeAnalysis.LanguageServer.linux-x64 5.0.0-1.25329.6 depends on NuGet.ProjectModel (>= 6.8.0-rc.112) but NuGet.ProjectModel 6.8.0-rc.112 was not found. NuGet.ProjectModel 6.8.0 was resolved instead.
INFO 2025-06-29 23:39:57,058 /tmp/tmp706o7zem/temp.csproj : warning NU1603: Microsoft.CodeAnalysis.LanguageServer.linux-x64 5.0.0-1.25329.6 depends on System.CommandLine (>= 2.0.0-beta5.25210.1) but System.CommandLine 2.0.0-beta5.25210.1 was not found. System.CommandLine 2.0.0-beta5.25277.114 was resolved instead.
INFO 2025-06-29 23:39:57,059 "/tmp/tmp706o7zem/temp.csproj" (Restore target) (1) ->
INFO 2025-06-29 23:39:57,059 (Restore target) ->
INFO 2025-06-29 23:39:57,060 /tmp/tmp706o7zem/temp.csproj : error NU1102: Unable to find package Microsoft.CodeAnalysis.CSharp.Features with version (= 5.0.0-1.25329.6)
INFO 2025-06-29 23:39:57,061 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 155 version(s) in nuget.org [ Nearest version: 4.14.0 ]
INFO 2025-06-29 23:39:57,062 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in /home/thomh/.dotnet/library-packs
INFO 2025-06-29 23:39:57,062 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in vs-impl
INFO 2025-06-29 23:39:57,063 /tmp/tmp706o7zem/temp.csproj : error NU1102: Unable to find package Microsoft.CodeAnalysis.Workspaces.MSBuild with version (= 5.0.0-1.25329.6)
INFO 2025-06-29 23:39:57,063 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 112 version(s) in nuget.org [ Nearest version: 4.14.0 ]
INFO 2025-06-29 23:39:57,064 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in /home/thomh/.dotnet/library-packs
INFO 2025-06-29 23:39:57,064 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in vs-impl
INFO 2025-06-29 23:39:57,065 /tmp/tmp706o7zem/temp.csproj : error NU1102: Unable to find package Microsoft.ServiceHub.Client with version (>= 4.2.1017)
INFO 2025-06-29 23:39:57,065 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 34 version(s) in nuget.org [ Nearest version: 4.1.3102 ]
INFO 2025-06-29 23:39:57,066 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in /home/thomh/.dotnet/library-packs
INFO 2025-06-29 23:39:57,066 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in vs-impl
INFO 2025-06-29 23:39:57,067 /tmp/tmp706o7zem/temp.csproj : error NU1102: Unable to find package Microsoft.CodeAnalysis.Features with version (= 5.0.0-1.25329.6)
INFO 2025-06-29 23:39:57,067 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 159 version(s) in nuget.org [ Nearest version: 4.14.0 ]
INFO 2025-06-29 23:39:57,068 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in /home/thomh/.dotnet/library-packs
INFO 2025-06-29 23:39:57,069 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in vs-impl
INFO 2025-06-29 23:39:57,069 /tmp/tmp706o7zem/temp.csproj : error NU1102: Unable to find package Microsoft.CodeAnalysis.CSharp with version (= 5.0.0-1.25329.6)
INFO 2025-06-29 23:39:57,070 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 167 version(s) in nuget.org [ Nearest version: 4.14.0 ]
INFO 2025-06-29 23:39:57,071 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in /home/thomh/.dotnet/library-packs
INFO 2025-06-29 23:39:57,071 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in vs-impl
INFO 2025-06-29 23:39:57,072 /tmp/tmp706o7zem/temp.csproj : error NU1102: Unable to find package Microsoft.CodeAnalysis.Common with version (= 5.0.0-1.25329.6)
INFO 2025-06-29 23:39:57,073 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 167 version(s) in nuget.org [ Nearest version: 4.14.0 ]
INFO 2025-06-29 23:39:57,074 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in /home/thomh/.dotnet/library-packs
INFO 2025-06-29 23:39:57,075 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in vs-impl
INFO 2025-06-29 23:39:57,076 /tmp/tmp706o7zem/temp.csproj : error NU1102: Unable to find package Microsoft.CodeAnalysis.Workspaces.Common with version (= 5.0.0-1.25329.6)
INFO 2025-06-29 23:39:57,076 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 167 version(s) in nuget.org [ Nearest version: 4.14.0 ]
INFO 2025-06-29 23:39:57,077 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in /home/thomh/.dotnet/library-packs
INFO 2025-06-29 23:39:57,078 /tmp/tmp706o7zem/temp.csproj : error NU1102: - Found 0 version(s) in vs-impl
INFO 2025-06-29 23:39:57,078 3 Warning(s)
INFO 2025-06-29 23:39:57,079 7 Error(s)

[jasonmalinowski]

These packages aren't 'normal' NuGet packages in the sense they are really just glorified .zips to copy around the final built images. They shouldn't really have any dependencies in the first place. @thomhurst can you file a bug for this and we'll just remove them entirely?

[thomhurst]

Thanks @jasonmalinowski !

I'm trying to boot up the C# language server to talk to an MCP server, to help give an AI assistant more code context.

It boots but crashes with this error shortly after starting:

ERROR 2025-06-30 19:45:35,086 [Microsoft.CodeAnalysis.LanguageServer.HostWorkspace.Razor.RazorDynamicFileInfoProvider] RazorDynamicFileInfoProvider not initialized. RazorWorkspaceService or RazorLspDynamicFileInfoProvider is null.

Any idea how to resolve that?

Starting it like this currently:

Starting language server process via command: ['/home/thomh/.dotnet/dotnet', '/home/thomh/.cache/serena/language-servers/csharp/Microsoft.CodeAnalysis.LanguageServer.linux-x64.5.0.0-1.25329.6/Microsoft.CodeAnalysis.LanguageServer.dll', '--stdio', '--logLevel', 'Warning', '--extensionLogDirectory', '/home/thomh/.cache/serena/language-servers/csharp/logs']

[jasonmalinowski]

@davidwengier this look familiar?

[davidwengier]

Looks like you'll need the Razor VS Code extension at least, and to pass it to Roslyn via the --extension argument. See https://github.com/dotnet/vscode-csharp/blob/main/src/lsptoolshost/extensions/builtInComponents.ts#L35-L39 where it's defined, and https://github.com/dotnet/vscode-csharp/blob/main/src/lsptoolshost/server/roslynLanguageServer.ts#L645-L648 where it's passed to the language server.

Hopefully you can access it from https://dev.azure.com/azure-public/vside/_artifacts/feed/msft_consumption/NuGet/Microsoft.VisualStudioCode.RazorExtension/overview/10.0.0-preview.25329.6 (or similar)