Packaging transitive analyzers with NuGet
Consider the scenario of ThisAssembly and its referenced packages: the main package is essentially a meta-package so that anyone wanting to leverage all the codegen in all the ThisAssembly.* packages can reference a single one. By default, NuGet pack will create a package that declares the project reference dependencies like so:
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<dependencies>
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<group targetFramework=".NETStandard2.0">
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<dependency id="ThisAssembly.AssemblyInfo" version="42.42.42" exclude="Build,Analyzers" />
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<dependency id="ThisAssembly.Metadata" version="42.42.42" exclude="Build,Analyzers" />
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<dependency id="ThisAssembly.Project" version="42.42.42" exclude="Build,Analyzers" />
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<dependency id="ThisAssembly.Strings" version="42.42.42" exclude="Build,Analyzers" />
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</group>
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</dependencies>
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Note all those
exclude. Not good since now it means projects referencing this package will not get the transitive analyzers, which are precisely the point of this meta-package.The fix is highly non-obvious: you must explicitly state that none of the referenced project assets are to be flagged as private:
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<ItemGroup>
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<ProjectReference Include="../ThisAssembly.AssemblyInfo/ThisAssembly.AssemblyInfo.csproj" PrivateAssets="none" />
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<ProjectReference Include="../ThisAssembly.Metadata/ThisAssembly.Metadata.csproj" PrivateAssets="none" />
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<ProjectReference Include="../ThisAssembly.Project/ThisAssembly.Project.csproj" PrivateAssets="none" />
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<ProjectReference Include="../ThisAssembly.Strings/ThisAssembly.Strings.csproj" PrivateAssets="none" />
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</ItemGroup>
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This properly allows the transitive build and analyzer assets to be properly installed on the referencing project.
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