Local mirror for snaps?

[ogra]

snap does respect general http(s) proxies, so while you can not really manage a mirror, you can at least have a central (generic) http proxy for your snaps …

Set snapd proxy via core configuration

One topic that came up during the sprint is that there is no easy way to set the proxy for snapd. On a classic system this is easy via editing /etc/environment. However on an ubuntu-core system this file is read-only. Providing an easy way to set the proxy on core this way would be beneficial.