Ensure the VSCode server process runs on non-preview runtime #70446
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src/Features/LanguageServer/Microsoft.CodeAnalysis.LanguageServer/Program.cs
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Co-authored-by: Jason Malinowski <[email protected]>
…ver/Program.cs Co-authored-by: Jason Malinowski <[email protected]>
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The change
Removes the
RuntimeFrameworkVersionspecified in the VSCode language server process (and adds logging as to which dotnet runtime the server and build host process are running on)Why we specified
RuntimeFrameworkVersionin the pastSpecifying the
RuntimeFrameworkVersionwas an old hack that allowed the main server process to roll forward to run on preview runtimes. This was required to be able to load some projects using preview SDKs.Why we don't need
RuntimeFrameworkVersionnowWe now launch a separate build host process with roll forward
LatestMajorandDOTNET_ROLL_FORWARD_TO_PRERELEASEto1. This will allow the build host to run and load the project on preview runtimes. It is not necessary for our main server process to run on preview runtimes.Why this is changing now
Setting
RuntimeFrameworkVersionto a preview version causes the language server to prefer to run on a preview version of .NET 7, even when a non-preview version of .NET 7 is installed.This causes the exceptions noted in dotnet/vscode-csharp#6479 because the version of
System.Text.Jsonin the .NET 7 Preview 7 SDK is missing theJsonRequiredAttribute. But the copy ofNewtonsoft.Jsonin the server is expecting it to be present (and it is available in non-preview versions of .NET 7).Note: if only a preview version of .NET 7 is installed it won't match our runtime version requirement and we will download a non-preview .NET 7 runtime (via the runtime installer extension).
Resolves dotnet/vscode-csharp#6479