Running a lean script with custom library path

Stream: lean4

[Siddharth Bhat]

I'd like to run lean compile-this-file.lean --library-path=/path/to/my/library.

I expected lean compile-this-file.lean --root=/path/to/my/library to work, but it doesn't seem to (it complains that it's unable to find the import). Is this a use-case that's supported by the lean compiler?