uv run python --with numpy python -V fails because Scripts directory doesn't exist #16204
Description
Summary
I have just upgraded my Python installation (on Windows) to Python 3.14, using the new Python Manager for Windows. I uninstalled all older versions of Python, and installed 3.14 and 3.14t. I also did uv python list, and uninstalled all uv-managed Pythons, so the only Python installations uv sees are the two 3.14 ones:
❯ uv python list
cpython-3.14.0-windows-x86_64-none C:\Users\Gustav\AppData\Local\Python\pythoncore-3.14-64\python.exe
cpython-3.14.0-windows-x86_64-none <download available>
cpython-3.14.0+freethreaded-windows-x86_64-none C:\Users\Gustav\AppData\Local\Python\pythoncore-3.14t-64\python3.14t.exe
cpython-3.14.0+freethreaded-windows-x86_64-none <download available>
cpython-3.13.8-windows-x86_64-none <download available>
cpython-3.13.8+freethreaded-windows-x86_64-none <download available>
cpython-3.12.11-windows-x86_64-none <download available>
cpython-3.11.13-windows-x86_64-none <download available>
cpython-3.10.18-windows-x86_64-none <download available>
cpython-3.9.23-windows-x86_64-none <download available>
cpython-3.8.20-windows-x86_64-none <download available>
pypy-3.11.13-windows-x86_64-none <download available>
pypy-3.10.16-windows-x86_64-none <download available>
pypy-3.9.19-windows-x86_64-none <download available>
pypy-3.8.16-windows-x86_64-none <download available>
graalpy-3.12.0-windows-x86_64-none <download available>
graalpy-3.11.0-windows-x86_64-none <download available>
graalpy-3.10.0-windows-x86_64-none <download available>
When I run uv run python -V, I get the output Python 3.14.0, as expected. However, when I run uv run --with numpy python -V, I get
❯ uv run --with numpy python -V
error: failed to read directory `C:\Users\Gustav\AppData\Local\Python\pythoncore-3.14-64\Scripts`: The system cannot find the path specified. (os error 3)
This is technically correct, as I do not have a Scripts directory (yet?) in that location. But the Scripts directory is not needed to run Python, so it should not be necessary to manually modify my Python installation just to get uv run --with to work.
Platform
Windows 11 x86_64
Version
uv 0.9.0 (39b6886 2025-10-07)
Python version
Python 3.14.0 (installed via new Python manager)