Running dotnet build -f net46 builds and packages packages that contain all frameworks

from @niemyjski at https://github.com/dotnet/cli/issues/5595

So I was running into tons of issues that have been fixed in the nightlies and just wanted to build and package only .net 46 framework targets so I ran the build with -f net46

https://github.com/exceptionless/Foundatio/blob/master/appveyor.yml#L23

But it appears that the nuget package were still built and completed as full framework and net standard targets.

https://www.nuget.org/packages/Foundatio/

I expected the netstandard build and packaging not to take place (I also haven’t looked inside the nuget package yet to see what is in the net standard folder).

[rohit21agrawal]

@niemyjski see my comment https://github.com/dotnet/sdk/issues/825#issuecomment-278359578 for explanation

[rohit21agrawal]

@piotrpMSFT @niemyjski Ok… I just played a little with this :

If my project has TargetFrameworks=net46;netstandard1.4 set along with GeneratePackageOnBuild = true, and I run dotnet build -f net46 this will actually not end up creating the package at all. This is because the only way in Pack targets that we differentiate an inner build from an outer build is using the condition :

<IsInnerBuild Condition="'$(TargetFramework)' != '' AND '$(TargetFrameworks)' != ''">true</IsInnerBuild> .

Since dotnet build -f net46 is equivalent to calling dotnet build /p:TargetFramework=net46, it causes pack to think of outer build as inner build too, and therefore it doesn’t execute at all.

If instead I run dotnet build /p:TargetFrameworks=net46 ; then I get the results i expect, the build only builds for the net46 framework and pack only packs the net46 assemblies.

Maybe we need to modify the framework switch to pass in TargetFrameworks instead of TargetFramework?