Nix Behind Proxy on Ubuntu

It took me a while to fix timeout errors.

Perhaps there is a better way (or hopefully a fix coming).

I am a medium-term Nix user, and it stumped me… Not great for beginners…

sudo systemctl set-environment http_proxy=".." HTTP_PROXY=".." https_proxy=".." HTTPS_PROXY=".."

I used Determinate Systems installer, would they be the best bet to file an issue?