I'm uploading a private nuget package to a private nuget repository. The package is commercial (not open source).
The csproj has this:
<PackageLicenseExpression>Commercial</PackageLicenseExpression>
I receive a build warning that the above is not a valid "license expression".
What value do I use?
You need to embed your license file, you can't use the license expression: https://docs.microsoft.com/nuget/reference/msbuild-targets#packing-a-license-expression-or-a-license-file
<PropertyGroup>
<PackageLicenseFile>LICENSE.txt</PackageLicenseFile>
</PropertyGroup>
<ItemGroup>
<None Include="licenses\LICENSE.txt" Pack="true" PackagePath=""/>
</ItemGroup>
NuGet's license expressions use SPDX identifiers, and I don't see any "generic" commercial license.