Add search folder for pio lib search command

Hi there.
I’ve just started using plaformio to compile for arduino boards.
But I have a few questions:
-pio lib search, uses PATH variable to search for libs?
-how I can avoid manually search for lib location and copy it to some folder, and just tell platformio to search for the header in a specified location and add it to the project?
-how can I do the same for the dependencies? Most are spread around the directory tree. Searching for each is time busting.

Thanks.

Please take a look at PlatformIO Library Dependency Finder (LDF).