Breaking changes in CoreFx packages due to net461 > ns2.0 mapping

[ericstj]

The remapping can cause ref-def mismatches when a NS1.5 or higher library is consumed in net461. For example see aspnet/MusicStore#775 (comment).

We could mitigate this by shoving those into the NETStandard.Library.NETFramework package, effectively "lifting" the implementation assembly up to the higher version via conflict resolution.

Alternatively we do nothing and document that folks should upgrade those packages.

@weshaggard @terrajobst, thoughts?

[weshaggard]

I would prefer we keep the support package just to things that are not inbox. For these I think the fall into the same bucket as SqlClient that folks have to update their reference to those packages.

[ericstj]

We should probably collect a list of all impacted packages and write up a release note for it.

[karelz]

@ericstj do we still have some work left here? It is old bug with 2.0.0 milestone.

[ericstj]

Yes this should be closed. The SDK actually did the work of fixing this by forcing folks up to the latest facades when it found they were in this spot.