NuGet (non-)deployment of dll.config file in lib folder of System.Data.SQLite.Core Package?

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Question

What is the meaning of the package author of System.Data.SQLite packaging a .dll.config file in such a way that it is included in the output directory by the default(?) NuGet mechanism, when the same puts a comment into the file that you should not copy the file to the output directory??

Is it possible to prevent NuGet/MSBuild/VisualStudio to copy said file to the output directory?

That is, is it possible to prevent a "related" file from nupkg\lib\net46 being copied to the output directory?

Details

The System.Data.SQLite.Core NuGet package contains the System.Data.SQLite.dll file (among other things), as well as the additional files System.Data.SQLite.xmland System.Data.SQLite.dll.config.

These three files are located in all \lib\<framework>\ folders of the nupkg.

Accordingly, Visual Studio / MSBuild / NuGet copies these files to the output folder:

8>  Primary reference "System.Data.SQLite, Version=1.0.111.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139". (TaskId:102)
8>      Resolved file path is "c:\...\nuget\System.Data.SQLite.Core.1.0.111.0\lib\net46\System.Data.SQLite.dll". (TaskId:102)
8>      Reference found at search path location "{HintPathFromItem}". (TaskId:102)
8>      Found related file "c:\...\nuget\System.Data.SQLite.Core.1.0.111.0\lib\net46\System.Data.SQLite.xml". (TaskId:102)
8>      Found related file "c:\...\nuget\System.Data.SQLite.Core.1.0.111.0\lib\net46\System.Data.SQLite.dll.config". (TaskId:102)
...
8>          c:\kse\nuget\System.Data.SQLite.Core.1.0.111.0\lib\net46\System.Data.SQLite.dll.config
8>                  CopyLocal=true
8>                  FusionName=
8>                  HintPath=c:\...\nuget\System.Data.SQLite.Core.1.0.111.0\lib\net46\System.Data.SQLite.dll
8>                  OriginalItemSpec=c:\...\nuget\System.Data.SQLite.Core.1.0.111.0\lib\net46\System.Data.SQLite.dll
8>                  ResolvedFrom={HintPathFromItem}
8>                  Version=1.0.111.0

However this file contains a disclaimer:

 * System.Data.SQLite.dll.config -
 *
 * WARNING: This XML configuration file is intended for use within the NuGet
 *          package directories only.  Please do not copy this file to any of
 *          the build output directories because it could interfere with the
 *          native library pre-loading feature.

-- that it should not be copied. So: how do I not copy it? Should I care?

Note that System.Data.SQLite.dll.config seems to be better documented under a different path.

nuget-package-restore nuget system.data.sqlite app-config
1 Answers

If you reference NuGet packages with PackageReference, you can exclude assets from being imported into your project with the ExcludeAssets attribute as described here in section "Controlling Dependency Assets". However, this excludes a group of assets and does not allow for controlling single files and will not solve this problem.

Apart from that you could employ custom MS Build logic or try to delete the .config files with a post build event, which would both be similiar in the result.

user_61815990
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