Hi, if you're trying to build lemmy from scratch, on debian (not ubuntu), and you're following this guide: https://join-lemmy.org/docs/en/administration/from_scratch.html
There are a few corrections I would like to point you.
Install those two things before following the guide:
apt install sudo
Of course, 'sudo' is not installed by default on Debian, so I guess it would be a good idea to install it.
sudo apt install build-essential
This will install the 'cc' compiler needed by Rust.
sudo apt install protobuf-c-compiler protobuf-compiler
This is needed to compile opentelemetry-proto.
You just crushed my soul again.