sevomin/packages/Microsoft.AspNet.WebPages.3.1.2/Content/Web.config.install.xdt

<?xml version="1.0"?>
<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">

  <!-- If runtime tag is absent -->
  <runtime xdt:Transform="InsertIfMissing">
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    </assemblyBinding>
  </runtime>

  <!-- If runtime tag is present, but assembly binding tag is absent -->
  <runtime>
    <assemblyBinding xdt:Transform="InsertIfMissing" xmlns="urn:schemas-microsoft-com:asm.v1">
    </assemblyBinding>
  </runtime>

  <!-- If the binding redirect is already present, the existing entry needs to be removed before inserting the new entry-->
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly xdt:Transform="Remove"
          xdt:Locator="Condition(./_defaultNamespace:assemblyIdentity/@name='System.Web.Helpers')" >
      </dependentAssembly>
      <dependentAssembly xdt:Transform="Remove"
          xdt:Locator="Condition(./_defaultNamespace:assemblyIdentity/@name='System.Web.WebPages')" >
      </dependentAssembly>
    </assemblyBinding>
  </runtime>

  <!-- Inserting the new binding redirect -->
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly xdt:Transform="Insert">
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly xdt:Transform="Insert">
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>