PowerShell 7.4.6 fails to build with compiler mismatch error

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues.
• Refer to the FAQ.
• Refer to Differences between Windows PowerShell 5.1 and PowerShell.

Steps to reproduce

Start a fresh docker Ubuntu container. Note: I reproduced this on multiple distribution types, not simply Ubuntu.

docker run -it ubuntu:24.04

Run the following steps to build:

cd
apt-get update && apt-get install -y dotnet-sdk-8.0 build-essential git

git clone https://github.com/powershell/powershell --single-branch --branch v7.4.6

rm -f global.json
rm -f nuget.config

dotnet restore src/powershell-unix /p NuGetAudit=false
dotnet restore src/ResGen
dotnet restore src/TypeCatalogGen

cat <<'EOF' > src/Microsoft.PowerShell.SDK/obj/Microsoft.PowerShell.SDK.csproj.TypeCatalog.targets
<Project>
    <Target Name="_GetDependencies"
            DependsOnTargets="ResolveAssemblyReferencesDesignTime">
        <ItemGroup>
            <_RefAssemblyPath Include="%(_ReferencesFromRAR.HintPath)%3B"  Condition=" '%(_ReferencesFromRAR.NuGetPackageId)' != 'Microsoft.Management.Infrastructure' "/>
        </ItemGroup>
        <WriteLinesToFile File="$(_DependencyFile)" Lines="@(_RefAssemblyPath)" Overwrite="true" />
    </Target>
</Project>
EOF


dotnet msbuild src/Microsoft.PowerShell.SDK/Microsoft.PowerShell.SDK.csproj \
 /t:_GetDependencies \
 "/property:DesignTimeBuild=true;_DependencyFile=$PWD/src/TypeCatalogGen/powershell.inc" \
 /nologo

pushd src/ResGen
dotnet run
popd

pushd src/TypeCatalogGen
dotnet run ../System.Management.Automation/CoreCLR/CorePsTypeCatalog.cs powershell.inc
popd

dotnet publish src/powershell-unix/ \
    --output bin \
    --no-self-contained \
    --runtime "$(dotnet --info | awk '$1=="RID:"{print $2}')" \
    -p:PublishReadyToRun=true /v:n \
    /consoleLoggerParameters:ShowTimestamp \
    -p:NuGetAudit=false

Expected behavior

The dotnet publish should complete successfully.

This is related to #24548, but this is not about the links to the private repository in nuget.config.

Actual behavior

The build fails with the following as the final error:

00:07:18.953     7>CSC : error CS9057: The analyzer assembly '/root/powershell/src/System.Management.Automation/SourceGenerators/PSVersionInfoGenerator/bin/Release/netstandard2.0/SMA.Generator.dll' references version '4.9.0.0' of the compiler, which is newer than the currently running version '4.8.0.0'. [/root/powershell/src/System.Management.Automation/System.Management.Automation.csproj]
                     CompilerServer: server - server processed compilation - 61cf027b-8fdf-4f6f-8688-30a6bf5f67ad
00:07:18.956     7>Done Building Project "/root/powershell/src/System.Management.Automation/System.Management.Automation.csproj" (default targets) -- FAILED.
00:07:18.961     4>Done Building Project "/root/powershell/src/Microsoft.PowerShell.ConsoleHost/Microsoft.PowerShell.ConsoleHost.csproj" (default targets) -- FAILED.
00:07:18.964     6>Done Building Project "/root/powershell/src/Microsoft.PowerShell.Security/Microsoft.PowerShell.Security.csproj" (default targets) -- FAILED.
00:07:18.966     5>Done Building Project "/root/powershell/src/Microsoft.PowerShell.Commands.Utility/Microsoft.PowerShell.Commands.Utility.csproj" (default targets) -- FAILED.
00:07:18.967     3>Done Building Project "/root/powershell/src/Microsoft.PowerShell.Commands.Management/Microsoft.PowerShell.Commands.Management.csproj" (default targets) -- FAILED.
00:07:18.970     2>Done Building Project "/root/powershell/src/Microsoft.PowerShell.SDK/Microsoft.PowerShell.SDK.csproj" (default targets) -- FAILED.
00:07:18.971     1>Done Building Project "/root/powershell/src/powershell-unix/powershell-unix.csproj" (Publish target(s)) -- FAILED.

Build FAILED.

                   "/root/powershell/src/powershell-unix/powershell-unix.csproj" (Publish target) (1:7) ->
                   "/root/powershell/src/Microsoft.PowerShell.Commands.Management/Microsoft.PowerShell.Commands.Management.csproj" (default target) (3:6) ->
                   "/root/powershell/src/System.Management.Automation/System.Management.Automation.csproj" (default target) (7:14) ->
                   (CoreCompile target) -> 
                     CSC : error CS9057: The analyzer assembly '/root/powershell/src/System.Management.Automation/SourceGenerators/PSVersionInfoGenerator/bin/Release/netstandard2.0/SMA.Generator.dll' references version '4.9.0.0' of the compiler, which is newer than the currently running version '4.8.0.0'. [/root/powershell/src/System.Management.Automation/System.Management.Automation.csproj]

    0 Warning(s)
    1 Error(s)

Error details

No response

Environment data

Ubuntu 24.04 LTS

Visuals

No response

Reproduce the v7.4.6 build in the Ubuntu 24.04 Docker environment using the commands in the issue. Start with src/System.Management.Automation/System.Management.Automation.csproj and the PSVersionInfoGenerator under src/System.Management.Automation/SourceGenerators, then trace the compiler versions used by the build; done means dotnet publish completes without CS9057.