* feat: add UV_PYTHON_INSTALL_MIRROR env and instance setting
Allows operators to point `uv python install` at a private mirror of the
python-build-standalone releases. Configurable via the
`UV_PYTHON_INSTALL_MIRROR` env var or the `uv_python_install_mirror`
instance setting, with the env var as the boot fallback and the instance
setting taking precedence at reload.
Fixes WIN-1966
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
* fix: hoist uv_python_install_mirror binding above sandboxing branch
The non-sandboxed uv pip install branch referenced a binding that was
only declared inside the sandboxed branch.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
* fix: neutral placeholder for uv_python_install_mirror
The previous placeholder was the default public URL the setting is meant
to redirect away from. A neutral example mirror URL is clearer.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>