Update charmcraft.yaml build tools

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pip (changelog)	25.1.1 -> 25.2
uv (source, changelog)	0.8.0 -> 0.8.4

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Release Notes

pypa/pip (pip)

v25.2

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astral-sh/uv (uv)

v0.8.4

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Enhancements

• Improve styling of warning cause chains (#​14934)
• Extend wheel filtering to Android tags (#​14977)
• Perform wheel lockfile filtering based on platform and OS intersection (#​14976)
• Clarify messaging when a new resolution needs to be performed (#​14938)

Preview features

• Add support for extending package's build dependencies with extra-build-dependencies (#​14735)
• Split preview mode into separate feature flags (#​14823)

Configuration

• Add support for package specific exclude-newer dates via exclude-newer-package (#​14489)

Bug fixes

• Avoid invalidating lockfile when path or workspace dependencies define explicit indexes (#​14876)
• Copy entrypoints that have a shebang that differs in python vs python3 (#​14970)
• Fix incorrect file permissions in wheel packages (#​14930)
• Update validation for environments and required-environments in uv.toml (#​14905)

Documentation

• Show uv_build in projects documentation (#​14968)
• Add UV_ prefix to installer environment variables (#​14964)
• Un-hide uv from --build-backend options (#​14939)
• Update documentation for preview flags (#​14902)

v0.8.3

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Python

• Add CPython 3.14.0rc1

See the python-build-standalone release notes for more details.

Enhancements

• Allow non-standard entrypoint names in uv_build (#​14867)
• Publish riscv64 wheels to PyPI (#​14852)

Bug fixes

• Avoid writing redacted credentials to tool receipt (#​14855)
• Respect --with versions over base environment versions (#​14863)
• Respect credentials from all defined indexes (#​14858)
• Fix missed stabilization of removal of registry entry during Python uninstall (#​14859)
• Improve concurrency safety of Python downloads into cache (#​14846)

Documentation

• Fix typos in uv_build reference documentation (#​14853)
• Move the "Cargo" install method further down in docs (#​14842)

v0.8.2

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Enhancements

• Add derivation chains for dependency errors (#​14824)

Configuration

• Add UV_INIT_BUILD_BACKEND (#​14821)

Bug fixes

• Avoid reading files in the environment bin that are not entrypoints (#​14830)
• Avoid removing empty directories when constructing virtual environments (#​14822)
• Preserve index URL priority order when writing to pyproject.toml (#​14831)

Rust API

• Expose tls_built_in_root_certs for client (#​14816)

Documentation

• Archive the 0.7.x changelog (#​14819)

v0.8.1

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Enhancements

• Add support for HF_TOKEN (#​14797)
• Allow --config-settings-package to apply configuration settings at the package level (#​14573)
• Create (e.g.) python3.13t executables in uv venv (#​14764)
• Disallow writing symlinks outside the source distribution target directory (#​12259)
• Elide traceback when python -m uv in interrupted with Ctrl-C on Windows (#​14715)
• Match --bounds formatting for uv_build bounds in uv init (#​14731)
• Support extras and dependency_groups markers in PEP 508 grammar (#​14753)
• Support extras and dependency_groups markers on uv pip install and uv pip sync (#​14755)
• Add hint to use uv self version when uv version cannot find a project (#​14738)
• Improve error reporting when removing Python versions from the Windows registry (#​14722)
• Make warnings about masked [tool.uv] fields more precise (#​14325)

Preview features

• Emit JSON output in uv sync with --quiet (#​14810)

Bug fixes

• Allow removal of virtual environments with missing interpreters (#​14812)
• Apply Cache-Control overrides to response, not request headers (#​14736)
• Copy entry points into ephemeral environments to ensure layers are respected (#​14790)
• Workaround Jupyter Lab application directory discovery in ephemeral environments (#​14790)
• Enforce requires-python in pylock.toml (#​14787)
• Fix kebab casing of README variants in build backend (#​14762)
• Improve concurrency resilience of removing Python versions from the Windows registry (#​14717)
• Retry HTTP requests on invalid data errors (#​14703)
• Update virtual environment removal to delete pyvenv.cfg last (#​14808)
• Error on unknown fields in dependency-metadata (#​14801)

Documentation

• Recommend installing setup-uv after setup-python in Github Actions integration guide (#​14741)
• Clarify which portions of requires-python behavior are consistent with pip (#​14752)

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