shorten windows cond env path

[lanluo-nvidia]

Description

shorten the windows conv env path

Fixes # (issue)
ERROR: Could not install packages due to an OSError: [WinError 206] The filename or extension is too long: 'C:\\actions-runner\\_work\\_temp\\conda_environment_26287354992\\Lib\\site-packages\\torch-2.13.0.dev20260522+cu130.dist-info\\licenses\\third_party\\kineto\\libkineto\\third_party\\dynolog\\third_party\\prometheus-cpp\\3rdparty\\civetweb\\src\\third_party\\duktape-1.5.2'

Type of change

Please delete options that are not relevant and/or add your own.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project (You can use the linters)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas and hacks
• I have made corresponding changes to the documentation
• I have added tests to verify my fix or my feature
• New and existing unit tests pass locally with my changes
• I have added the relevant labels to my PR in so that relevant reviewers are notified

[narendasan]

This is kind of weird lol

[narendasan]

What is this file trying to do?

[lanluo-nvidia]

That script shortens a long Conda env path by mapping its parent directory to a temporary Windows drive letter
Example:
C:...\very\very\long\conda\envs\path
becomes something like:
T:
That helps avoid Windows path length failures during builds.
The Windows drive requirement is:
single ASCII letter A-Z, case-insensitive, followed by :