The north-central Andes is in trouble but not nearly as much as the southern Peruvian Andes, from what I have seen on my travels. Farming rhythms have changed around Huaraz due to climate change effects, but people can still grow crops and there is rain. Cusco area (inc. Ausangate), however, is very, very dry, and the farmers there depend more on glacial melt-off.

I hear things are really bad in Puno and the high altiplano. Has anyone been there lately?

When I go to Peru, I always come back without much left in my suitcase… More effective than taking my things to a charity shop here in the UK!