#19428 Pex does not add bin folder to path Issue created by idan-at Describe the bug Pex

PATH

does not include the virtual environment

bin

folder. Code to reproduce: # BUILD python_sources() python_requirement( name="req", requirements=["ninja"] ) pex_binary( name="bin", entry_point="main.py" ) # main.py import subprocess subprocess.run(['ninja', '--help']) Running the

bin

target raises a

FileNotFoundError: [Errno 2] No such file or directory: 'ninja'

exception. Pants version 2.16.0 OS MacOS Additional info When using virtual env,

activate

adds the

<virtual-env>/bin

folder to

PATH

. This allows the program to run

subprocess.call

on any binary that was packed with one of the program dependencies. pantsbuild/pants