setup_pytorch_env.bat called multiple times in windows CI, slowing it down #13465
Description
open up the full log from a test2 job, and search for setup_pytorch_env.bat - there are two occurences.
This is because in win-test.sh, we do
ci_scripts/test_python_all_except_nn.bat && ci_scripts/test_custom_script_ops.bat
and each of those runs the setup script at the top.
bonus points if the environment setup is split out in a way that's convenient for iterative debugging (i.e. rerun tests N times without reinstalling python packages N times)