Publish the installer msi product code
I have been deploying and updating Octopus Server using DSC, which works very well.
To to this I need the installer download link, easy to get from the downloads page, and the msi product code so that DSC can check the installed version.
Currently this means I need to download the installer to my machine just so I can open it and find the product code. If you published the msi product code like you publish the MD5 hash. It would make my DSC update workflow simpler.

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Graham Ambrose commented
Ideally the product code would not change between each release. If you could build your installers with consistent product codes this would make installing tentacles using powershell dsc simpler.