Dedup environment variables to prevent their lengths from blowing up if prefix.py is run multiple times. Order is maintained by keeping the position of the first instance of each path relative to each other first instances.
Dedup environment variables to prevent their lengths from blowing up if prefix.py is run multiple times.
Order is maintained by keeping the position of the first instance of each path relative to each other first instances.

lkersting/SCR-2123,lkersting/SCR-2123,lkersting/SCR-2123,lkersting/SCR-2123