$ sudo apt-get update
$ sudo apt-get install erlang-p1-yaml 

erlang-p1-yaml is installed in your system.

Make ensure the erlang-p1-yaml package were installed using the commands given below,

$ sudo dpkg-query -l | grep erlang-p1-yaml *

You will get with erlang-p1-yaml package name, version, architecture and description in a table

erlang-p1-yaml package basic information: