environment variable for LIBS dir not properly expanded in Path in "Run Settings"

My .pro file contains a LIBS += line that specifies some required libraries that we link against, and this works as expected. I also see that the paths in the LIBS directive are helpfully added to the "Path" entry in the "Run Environment" in the "Run Settings" tab of the Project view.

However, when the path to a lib includes an environment variable, the expanded path in the "Run Environment" is incorrect. For example:

LIBS += -L$(PYTHON_PATH)\PCbuild

in my .pro file (which works fine for compilation), results in

\PCbuild;

being added to the Path in the "Run Environment". It would be great if the mechanism that populates the "Run Environment" could properly expand the $(PYTHON_PATH) portion of the libs entry. Thanks!