I just wanted to put an FYI out there that IsWiX will not support Visual Studio 2017 at launch date. Microsoft has made substantial changes to the way VS is deployed and created a lot of complications for extension developers.
In order for IsWiX to function in VS 2 extensions need to be installed:
The WiX votive is required to load .wixproj based projects in your solution and is the foundation for IsWiX's own multiproject solution templates.
The IsWiX AddIn is required to send a .wxs document to the IsWiX.exe.
WiX appears to be moving in the direction of removing Votive from their installer and shipping it separately via the VS marketplace. Assuming the work is completed (there is currently no ship date announced for v3.11.0) it will likely require the setup developer to do an additional installation step prior to being able to load an existing solution or create a new one.
As sub optimal as this is, it appears to be set in stone and I have no intention of spending any energy on IsWiX until I see the final landscape of what I have to deal with. I will likely do something similar to what they are doing or I might make a bootstrapper to automate installing WiX, the votive extension and the IsWiX AddIn extension.
FWIW, while this has been the worst, ever release of VS has caused pain for me as either a user of WiX or a user of InstallShield. It just takes time for this to catch up. For this reason I *ALWAYS* recommend keeping your application projects in one solution and your installer projects in another. This way you can ensure you won't be blocking your application developers from moving forward to the latest version of VS while you continue to compile against the tried and true version you've always used. They need to be cutting edge, we do not need to be.