Velopack MSI uses WiX-derived dialogs/custom actions. Source: https://github.com/velopack/velopack/tree/f2edcbcafb81da5b3c884aaea330e225ad91d8b6/src/vpk/Velopack.Packaging.Windows/Msi
WiX fork source: https://github.com/velopack/wix/tree/4dd4ab0584ad6add052c55ae497dcb1a88463718
Copyright (c) .NET Foundation and contributors. Microsoft Reciprocal License; see LICENSE.TXT.
