On Fri, Dec 9, 2016 at 4:50 AM, Simon Peyton Jones via ghc-devs <ghc-devs@haskell.org> wrote:
I have wanted telemetry for years. ("Telemetry" is the term Microsoft, and I think others, use for the phone-home feature.)
It would tell us how many people are using GHC; currently I have literally no idea.
In practice I think the best data we could get is "how many people are using GHC && are willing to opt into phone-home," which seems like a rougher number than e.g. downloads of ghc/HP or number of downloads of base/containers or something similar. I also would not opt in.