According to docs Environments
When you compile your source code, Elixir compiles artifacts to the _build directory. However, in many occasions to avoid unnecessary copying, Elixir will create filesystem links from _build to actual source files. When true, :build_embedded disables this behaviour as it aims to provide everything you need to run your application inside _build
here they have mentioned
When true, :build_embedded disables this behaviour, but i cant find where to mention the value true?