I want to create a BUILD for

project_a

where all the python files belong to that project which has its own

requirements.txt

and lockfile. But, one file, lets say

foo.py

, is used by another project,

project_b

, as the

entry_point

to its

pex_binary

target. How should I do this? I have tried to make a

python_sources

target with all python files except

foo.py

and a

python_source

target called

foo

just for

foo.py

. The

foo

target has

resolve=parametrize("A", "B")

where A and B are lockfiles of

project_a

and

project_b

respectively. This still doesn't work