Install erlang-src by entering the following commands in the terminal:
sudo apt update sudo apt install erlang-src
Description:
Erlang/OTP applications sources
Erlang sources for all the applications in the Erlang/OTP system. They are useful for educational purpose and as a base for creating embedded systems.
Homepage: http://www.erlang.org/
Version: 1:20.2.2+dfsg-1ubuntu2
Section: universe/interpreters