[VMR] Non-Linux status update

[directhex]

I've been tinkering away on the VMR, with the grand goal being the ability to build our servicing releases of mobile with it.

#3149 notwithstanding, the current status is:

• x64 Mac buildable on x64 Mac (or arm64 Mac with arch -x86_64 prefix to prep.sh/build.sh
• arm64 Mac buildable on arm64 Mac
• Windows x64 should be closer to working than before, but is untested

The obvious gap there is the ability to build arm64 Mac from x64, and vice versa - which ties in to the general "big engineering job" which needs to be resolved, of "building the VMR for RID A, using a computer with RID B". osx-arm64 from osx-x64 is the obvious easily reproduced example of this, but it extends to all the mobile ports, wasm, etc - overriding the TargetOS/TargetArchitecture is all well and good but the whole build system assumes "I am building on the target system" because that's how Linux distro builds do it, and source-build grew from their needs first.

source-build's build.sh doesn't use TargetOS/TargetArchitecture by itself, and passing those through with -- /p: doesn't achieve much:

$ arch -x86_64 ./build.sh --online -- /p:TargetArchitecture=arm64
[..]
  [16:34:27.69] Building 'source-build-reference-packages'
  Running command:
    /Users/directhex/Projects/dotnet/src/source-build-reference-packages/build.sh  --ci --configuration Release --restore --build --pack --publish -bl /p:ArcadeBuildFromSource=true /p:CopyWipIntoInnerSourceBuildRepo=true /p:DotNetBuildOffline=true /p:CopySrcInsteadOfClone=true /p:DotNetPackageVersionPropsPath="/Users/directhex/Projects/dotnet/artifacts/obj/x64/Release/PackageVersions.source-build-reference-packages.props" /p:AdditionalSourceBuiltNupkgCacheDir="/Users/directhex/Projects/dotnet/artifacts/obj/x64/Release/blob-feed/packages/" /p:ReferencePackageNupkgCacheDir="/Users/directhex/Projects/dotnet/prereqs/packages/reference/" /p:PreviouslySourceBuiltNupkgCacheDir="/Users/directhex/Projects/dotnet/prereqs/packages/previously-source-built/" /p:SourceBuildUseMonoRuntime= /p:MicrosoftNetCoreIlasmPackageRuntimeId=osx-x64 /p:LocalNuGetPackageCacheDirectory=/Users/directhex/Projects/dotnet/artifacts/obj/source-build-reference-package-cache  /p:DotNetPackageVersionPropsPath=/Users/directhex/Projects/dotnet/artifacts/obj/x64/Release/PackageVersions.source-build-reference-packages.props /p:DotNetBuildOffline=true
[..]
/Users/directhex/Projects/dotnet/repo-projects/Directory.Build.targets(324,5): error MSB3073: The command "/Users/directhex/Projects/dotnet/src/source-build-reference-packages/build.sh  --ci --configuration Release --restore --build --pack --publish -bl /p:ArcadeBuildFromSource=true /p:CopyWipIntoInnerSourceBuildRepo=true /p:DotNetBuildOffline=true /p:CopySrcInsteadOfClone=true /p:DotNetPackageVersionPropsPath="/Users/directhex/Projects/dotnet/artifacts/obj/x64/Release/PackageVersions.source-build-reference-packages.props" /p:AdditionalSourceBuiltNupkgCacheDir="/Users/directhex/Projects/dotnet/artifacts/obj/x64/Release/blob-feed/packages/" /p:ReferencePackageNupkgCacheDir="/Users/directhex/Projects/dotnet/prereqs/packages/reference/" /p:PreviouslySourceBuiltNupkgCacheDir="/Users/directhex/Projects/dotnet/prereqs/packages/previously-source-built/" /p:SourceBuildUseMonoRuntime= /p:MicrosoftNetCoreIlasmPackageRuntimeId=osx-x64 /p:LocalNuGetPackageCacheDirectory=/Users/directhex/Projects/dotnet/artifacts/obj/source-build-reference-package-cache /v:minimal  /p:DotNetPackageVersionPropsPath=/Users/directhex/Projects/dotnet/artifacts/obj/x64/Release/PackageVersions.source-build-reference-packages.props /p:DotNetBuildOffline=true >> /Users/directhex/Projects/dotnet/artifacts/logs/source-build-reference-packages.log 2>&1" exited with code 1. [/Users/directhex/Projects/dotnet/repo-projects/source-build-reference-packages.proj]
[..]
        Determining projects to restore...
    /Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj : error NU1102: Unable to find package Microsoft.NETFramework.ReferenceAssemblies with version (>= 1.0.3) [/Users/directhex/Projects/dotnet/prereqs/packages/restored/ArcadeBootstrapPackage/microsoft.dotnet.arcade.sdk/7.0.0-beta.22513.4/tools/Build.proj]
    ##vso[task.logissue type=error;sourcepath=/Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj;linenumber=0;columnnumber=0;code=NU1102;]Unable to find package Microsoft.NETFramework.ReferenceAssemblies with version (>= 1.0.3)
    /Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj : error NU1102: - Found 1 version(s) in previously-source-built [ Nearest version: 1.0.2 ] [/Users/directhex/Projects/dotnet/prereqs/packages/restored/ArcadeBootstrapPackage/microsoft.dotnet.arcade.sdk/7.0.0-beta.22513.4/tools/Build.proj]
    ##vso[task.logissue type=error;sourcepath=/Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj;linenumber=0;columnnumber=0;code=NU1102;]- Found 1 version(s) in previously-source-built [ Nearest version: 1.0.2 %5D
    /Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj : error NU1102: - Found 1 version(s) in reference-packages [ Nearest version: 1.0.2 ] [/Users/directhex/Projects/dotnet/prereqs/packages/restored/ArcadeBootstrapPackage/microsoft.dotnet.arcade.sdk/7.0.0-beta.22513.4/tools/Build.proj]
    ##vso[task.logissue type=error;sourcepath=/Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj;linenumber=0;columnnumber=0;code=NU1102;]- Found 1 version(s) in reference-packages [ Nearest version: 1.0.2 %5D
    /Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj : error NU1102: - Found 0 version(s) in source-build-reference-package-cache [/Users/directhex/Projects/dotnet/prereqs/packages/restored/ArcadeBootstrapPackage/microsoft.dotnet.arcade.sdk/7.0.0-beta.22513.4/tools/Build.proj]
    ##vso[task.logissue type=error;sourcepath=/Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj;linenumber=0;columnnumber=0;code=NU1102;]- Found 0 version(s) in source-build-reference-package-cache
    /Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj : error NU1102: - Found 0 version(s) in source-built [/Users/directhex/Projects/dotnet/prereqs/packages/restored/ArcadeBootstrapPackage/microsoft.dotnet.arcade.sdk/7.0.0-beta.22513.4/tools/Build.proj]
    ##vso[task.logissue type=error;sourcepath=/Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj;linenumber=0;columnnumber=0;code=NU1102;]- Found 0 version(s) in source-built
    /Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj : error NU1102: - Found 0 version(s) in prebuilt [/Users/directhex/Projects/dotnet/prereqs/packages/restored/ArcadeBootstrapPackage/microsoft.dotnet.arcade.sdk/7.0.0-beta.22513.4/tools/Build.proj]
    ##vso[task.logissue type=error;sourcepath=/Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj;linenumber=0;columnnumber=0;code=NU1102;]- Found 0 version(s) in prebuilt
        Failed to restore /Users/directhex/Projects/dotnet/src/source-build-reference-packages/artifacts/source-build/self/src/src/referencePackages/src/system.data.sqlclient/4.8.5/System.Data.SqlClient.4.8.5.csproj (in 1.97 sec).

      Build FAILED.

If we can get that basic case working, it shouldn't be hard to get mobile working.

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

[steveisok]

/cc @mmitche @premun @akoeplinger @mdh1418 @tkapin @MichaelSimons

[mmitche]

@directhex There are a few layers of build that happen when you invoke the SB command, and the msbuild parameters don't tend to get routed through all the way. I think we'll generally need to make TOS/TArch a first-class concept in source build. Since I am also coming up to speed on the intricacies of SB, let me try and explain and @MichaelSimons @crummel can correct where I am wrong.

• Layer 1: The initial set of scripts you invoke is a msbuild invocation that is responsible for the highest level of orchestration. It invokes the build script for each individual repo in the build, gathers outputs, prepares the input version property files, updates nuget.configs, etc.
• Layer 2: The individual repo build script is invoked, which itself invokes msbuild. To this layer are passed some top-level properties, like the location of the package override property files and whatever parameters are specified in the repo project (e.g. https://github.com/dotnet/dotnet/blob/main/repo-projects/aspnetcore.proj#L15).
• Layer 3: This is the inner source build command, for those repos that support arcade powered source build. This set of targets prepares the repo environment for SB (e.g. copying files to an inner clone location), and then executes a build script which does the build. The repo itself has some control over the properties used in this invocation, via the SourceBuild.props file: https://github.com/dotnet/dotnet/blob/main/src/runtime/eng/SourceBuild.props#L4

I think the main issue you're seeing with passing TOS/TArch as -- /p: is that those variables are only affecting that top-level msbuild invocation. We will need to introduce those concepts as first class to the SB ecosystem and figure out how they feed through to each repo that needs them.