MSBuild Server v1

[rokonec]

To improve inner loop experience of building small project fast in scenarios:

• dotnet new console
• dotnet build/run

We force MSBuild to always use external reusable nodes/processes to build projects.

Measured improvement: #6467

Implementation:

• Modify SDK to set MSBUILDNOINPROCNODE = 1
• Implement escape hatches DOTNET_DO_NOT_USE_MSBUILDNOINPROCNODE = 1

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TODO: bellov

During dogfooding we have identified few issues with current solution. All off below has to be somehow addressed for MSBuild V1 to be turned on by default:

• Not logging some properties - Diagnostic build log not emitting properties anymore? #6609
• Static graph restore can cause subsequent builds to fail - NuGet static graph restore can cause subsequent builds to fail to expand globs in .NET SDK 6.0.100-preview6 #6602
• Dogfooding in Arcade was failing on linux builds - installer repo on branch origin/updateStage0 sha a6e9cdf432fc3f403886dea7fa80b1ea7471eba3 was failing with ./build.sh /v:detailed on linux with error The project file could not be loaded. Data at the root level is invalid
• Missing log messages - when extension erroneously using Console.WriteLine as oppose to Logger.LogMessage - such messages will not make it out of ANY out-of-proc node

[rokonec]

Changes had made it into Installer.

[rokonec]

There are couple of known issues:

• when building SLN by arcade in linux
• when extension using Console.WriteLine as oppose to Logger.LogMessage.

[ladipro]

Closing for now as we don't have resources to work through the issues.