Project root placeholder in path

[savinmikhail]

Description

I had a subconfig, being imported in main config and located in root of the project. I moved it to dedicated submodule folder, and now all my paths are broken:

What i want is to have some placeholder, like we have in symfony's configs, like '%project_root%, which will be added infront of path, making it absolut and therefore immutable

[savinmikhail]

Using {{PWD}} not helping, also the error seems to miss output