Directory.Build.targets

<Project>
  <PropertyGroup>
    <CompareViSharedResolvedSource Condition="'$(CompareViSharedSource)' == ''">project</CompareViSharedResolvedSource>
    <CompareViSharedResolvedSource Condition="'$(CompareViSharedSource)' == 'project'">project</CompareViSharedResolvedSource>
    <CompareViSharedResolvedSource Condition="'$(CompareViSharedSource)' == 'package'">package</CompareViSharedResolvedSource>

    <CompareViSharedPackageCandidate Condition="'$(CompareViSharedPackageFeed)' != '' and '$(CompareViSharedPackageVersion)' != ''">
      $(CompareViSharedPackageFeed)/CompareVi.Shared.$(CompareViSharedPackageVersion).nupkg
    </CompareViSharedPackageCandidate>
    <CompareViSharedPackageAvailable Condition="'$(CompareViSharedPackageCandidate)' != '' and Exists('$(CompareViSharedPackageCandidate)')">true</CompareViSharedPackageAvailable>
    <CompareViSharedPackageAvailable Condition="'$(CompareViSharedPackageAvailable)' == ''">false</CompareViSharedPackageAvailable>

    <CompareViSharedResolvedSource Condition="'$(CompareViSharedSource)' == 'package-first' and '$(CompareViSharedPackageAvailable)' == 'true'">package</CompareViSharedResolvedSource>
    <CompareViSharedResolvedSource Condition="'$(CompareViSharedSource)' == 'package-first' and '$(CompareViSharedPackageAvailable)' != 'true'">$(CompareViSharedFallbackSource)</CompareViSharedResolvedSource>
  </PropertyGroup>

  <Target Name="PrintCompareViSharedSource">
    <Message
      Importance="High"
      Text="CompareViSharedSource=$(CompareViSharedSource);CompareViSharedResolvedSource=$(CompareViSharedResolvedSource);CompareViSharedFallbackSource=$(CompareViSharedFallbackSource);CompareViSharedPackageVersion=$(CompareViSharedPackageVersion);CompareViSharedPackageFeed=$(CompareViSharedPackageFeed);CompareViSharedPackageAvailable=$(CompareViSharedPackageAvailable)" />
  </Target>
</Project>