What's Changed

• chore[v1]: prepare for v1.6.1 by @henryiii in #1181

Full Changelog: 1.6.0...1.6.1

What's Changed

• Replace prettier with mdformat and yamlfmt by @gaborbernat in #1133
• Let yamlfmt format the workflows by @gaborbernat in #1134
• 🐛 fix(release): semver auto bump, changelog reflow, and roll back 1.5.1 by @gaborbernat in #1132
• fix: hash verification in --dependency-constraints-txt could be silently skipped by @manfred-kaiser in #1140
• 🐛 fix(ci): bump build-and-inspect-python-package to v3.0.1 by @gaborbernat in #1147
• 🐛 fix(ci): pin coverage core to ctrace so test contexts record by @gaborbernat in #1148
• chore: run mypy on more parts of the code by @henryiii in #1151
• chore: turn up strictness on mypy by @henryiii in #1153
• chore: faster mypy, fix merge error by @henryiii in #1156
• 🐛 fix(ci): rerun integration tests on transient network errors by @gaborbernat in #1150
• chore: clean up unused casts in tests by @henryiii in #1154
• refactor(typing): apply review feedback from #1093 by @henryiii in #1155
• chore: Generator is more accurate than Iterator by @henryiii in #1152
• tests: mark test_main_sdist_input_end_to_end with pytest.mark.network by @frenzymadness in #1144
• Revert "⚠️ feat(util): deprecate project_wheel_metadata" by @henryiii in #1158
• tests: download integration sources once per run by @henryiii in #1157
• Use stdlib importlib.metadata for typing by @layday in #1162
• Drop redundant exc_info parameter from backend exception wrapper by @layday in #1161
• Drop a few PyPy-specific test skips by @layday in #1164
• 🔧 chore: batch dependency updates weekly on Tuesday by @gaborbernat in #1165
• 👷 ci: use app token for releases by @gaborbernat in #1169

New Contributors

• @manfred-kaiser made their first contribution in #1140
• @frenzymadness made their first contribution in #1144

Full Changelog: 1.5.1...1.6.0

What's Changed

• ✨ feat(cli): accept sdist tarball as srcdir argument by @gaborbernat in #1057
• chore: drop 3.9 branches for version_info checks by @henryiii in #1059
• tests: skip test_uv_install_strips_pythonpath with missing uv by @mtelka in #1063
• chore: remove myself from codeowners by @FFY00 in #1066
• refactor: safe_extractall to use pathlib.Path by @henryiii in #1060
• ci: secure GitHub Actions workflows by @henryiii in #1068
• test: cover config settings forwarding in build_package and build_package_via_sdist by @terminalchai in #1058
• Revert "build(deps): bump virtualenv from 20.17 to 20.36.1" by @layday in #1076
• Revert "build(deps): bump wheel from 0.36.0 to 0.38.1" by @layday in #1075
• Revert "build(deps): bump pip from 22.3 to 26.1" by @layday in #1074
• 👷 ci: enforce lazy imports with flake8-lazy by @gaborbernat in #1088
• ✨ feat(deps): show wanted vs found in missing-deps error by @gaborbernat in #1082
• 👷 ci: align action pin version comments by @gaborbernat in #1091
• docs: update isolated env example to use DefaultIsolatedEnv by @shenxianpeng in #1090
• 🧪 test: compact test_parse_args with a typed make_kwargs helper by @gaborbernat in #1092
• ♻️ refactor(typing): ban explicit Any across src and tests by @gaborbernat in #1093
• ✨ feat(cli): warn on valueless config settings by @gaborbernat in #1081
• ✨ feat(cli): add --sdist-extract-dir to reuse compiler caches by @gaborbernat in #1085
• ⚠️ feat(util): deprecate project_wheel_metadata by @gaborbernat in #1084
• chore: bump pre-commit tags by @henryiii in #1095
• ✨ feat: report resolved build dependency versions by @gaborbernat in #1086
• ✨ feat(env): control the isolated build environment location by @gaborbernat in #1083
• ✨ feat(cli): machine-readable build report, and metadata from a wheel by @gaborbernat in #1080
• 🐛 fix(cli): drain verbose subprocess output without a worker thread by @henryiii in #1098
• ♻️ refactor(cli): minor cleanups in builder and CLI by @henryiii in #1099
• 🐛 fix(env): reject a file as --env-dir and drop a mutable default by @henryiii in #1100
• chore: add classifier for 3.15 (testing on beta already) by @henryiii in #1104
• chore: add lockfiles to gitignore by @henryiii in #1101
• chore: add check-dist by @henryiii in #1103
• ✨ feat(cli): surface debug paths when a backend build fails by @gaborbernat in #1087
• docs: shorten changelog entries to concise highlights by @henryiii in #1105
• chore(deps): raise dependency floors to 3.10 minimums and drop pytest cap by @henryiii in #1107
• chore: bump mypy, restrict pytest 9.1.0 by @henryiii in #1108
• fix(cli): fix CLI warnings being written to stdout instead of stderr by @ymyzk in #1111
• Bump vulnerable dependency floors (virtualenv, wheel) by @gaborbernat in #1113
• chore: default --installer to pip in argparse by @henryiii in #1117
• fix: build correct dest path in Windows symlink support probe by @henryiii in #1118
• fix: derive dist-info directory from wheel contents, not filename by @henryiii in #1119
• fix: use LF instead of os.linesep when writing pip/uv requirements files by @henryiii in #1120
• fix: decide color support per output stream, not solely from stdout by @henryiii in #1123
• refactor: open the wheel only once in metadata_path by @henryiii in #1126
• fix: minor robustness fixes from code review by @henryiii in #1121
• refactor: simplify code paths found in review by @henryiii in #1124
• perf: memoize check_dependency by @henryiii in #1122
• test: isolate color tests from NO_COLOR and FORCE_COLOR by @Yearnzq in #1128

New Contributors

• @mtelka made their first contribution in #1063
• @shenxianpeng made their first contribution in #1090
• @ymyzk made their first contribution in #1111
• @Yearnzq made their first contribution in #1128

Full Changelog: 1.5.0...1.5.1

What's Changed

• ci: try to improve release docs by @henryiii in #1051
• feat: drop 3.9, require 3.10+ by @henryiii in #1036
• chore: tox toml by @henryiii in #1033
• fix: api should not ignore installed, only CLI by @henryiii in #1056

Full Changelog: 1.4.4...1.5.0

What's Changed

• 🐛 fix(release): generate consistent CHANGELOG heading levels by @gaborbernat in #1032
• docs: move source links by @henryiii in #1034
• revert: drop PEP 660 change by @henryiii in #1039
• fix: ignore installed when running pip by @henryiii in #1040
• fix: revert part of #973 by @henryiii in #1044
• chore: report coverage failure lines by @henryiii in #1046
• tests: fix issue with uv run by @henryiii in #1048
• docs: reorganize testing docs for copy/paste by @abitrolly in #1043
• tests: keep environment from leaking in Python 3.15 by @henryiii in #1049
• docs: fix issue with changelog generation by @henryiii in #1050

Full Changelog: 1.4.3...1.4.4

What's Changed

• 🐛 fix(api): resolve thread-safety races in build API by @gaborbernat in #1015
• 🐛 fix(builder): validate backend-path entries exist on disk by @gaborbernat in #1016
• test: cover config settings build paths by @terminalchai in #992
• Add kind=(step, ) for root messages with * by @abitrolly in #973
• fix: correct changelog category ordering by @gaborbernat in #1017
• 🐛 fix(cli): show full dependency chain in missing deps error by @gaborbernat in #1019
• tests: fully annotate by @henryiii in #1020
• chore: lazy imports by @henryiii in #1021
• chore: adding more ruff codes by @henryiii in #1022
• tests: improve annotations by @henryiii in #1023
• 🧪 test(coverage): achieve 100% test coverage by @gaborbernat in #1018
• chore: add ruff PT by @henryiii in #1025
• chore: add ruff PYI by @henryiii in #1026
• chore: add ruff SIM/RET by @henryiii in #1028
• 🐛 fix(env): strip PYTHONPATH from isolated builds by @gaborbernat in #1024
• chore: use ruff ALL by @henryiii in #1029
• 🐛 fix(env): prevent pip credential hang with private indexes by @gaborbernat in #1030
• 🐛 fix(check_dependency): verify URL reqs via PEP 610 by @gaborbernat in #1027

New Contributors

• @terminalchai made their first contribution in #992

Full Changelog: 1.4.2...1.4.3

What's Changed

• fix(uv): always pass the python to use by @henryiii in #996
• 🐛 fix(release): detect pre-commit environment inconsistencies by @gaborbernat in #1001
• 🔧 fix(towncrier): match docstrfmt RST formatting expectations by @gaborbernat in #1002
• Fix _has_valid_outer_pip when pip is missing by @notatallshaw in #1003
• fix: release changelog issue by @henryiii in #1006

New Contributors

• @notatallshaw made their first contribution in #1003

Full Changelog: 1.4.1...1.4.2

What's Changed

• Fix documentation grammar and typos by @DimitriPapadopoulos in #979
• Allow setting build constraints by @layday in #963
• fix: pip hack workaround by @henryiii in #980
• 📚 docs: reorganize using Diataxis framework by @gaborbernat in #988
• ✨ feat(ci): automate releases and harden workflows by @gaborbernat in #991
• chore: avoid template injection zizmor issue by @henryiii in #994
• chore: fix PR template by @henryiii in #995
• chore: fix fix job by @henryiii in #997
• 🐛 fix(ci): resolve pre-release auth failure and change detection by @gaborbernat in #999
• 🐛 fix(deps): add pre-commit to release dependency group by @gaborbernat in #1000

Full Changelog: 1.4.0...1.4.1

• Add --quiet flag (PR #947)
• Add option to dump PEP 517 metadata with --metadata (PR #940, PR #943)
• Support UV environment variable (PR #971)
• Remove a workaround for 3.14b1 (PR #960)
• In 3.14 final release, color defaults to True already (PR #962)
• Pass sp-repo-review (PR #942)
• In pytest configuration, log_level is better than log_cli_level (PR #950)
• Split up typing and mypy (PR #944)
• Use types-colorama (PR #945)
• In docs, first argument for _has_dependency is a name (PR #970)
• Fix test failure when flit-core is installed (PR #921)

• Add --config-json (PR #916, fixes issue #900)
• Drop Python 3.8 (PR #891)
• Test on Python 3.14, colorful help on 3.14+ (PR #895)
• Fix ModuleNotFoundError when pip is not installed (PR #898)
• Disable use of pip install --python for debundled pip (PR #861)
• Don't pass no-wheel to virtualenv if it would warn (PR #892)
• Optimize our tests to run faster (PR #871, #872, #738)
• Allow running our tests without virtualenv (PR #911)
• Fix issues in our tests (PR #824, #918, #870, #915, #862, #863, #899, #896, #854)
• Use SPDX identifiers for our license metadata (PR #914)
• Use dependency-groups for our development (PR #880)
• Mention conda and update uv mention in README/docs (PR #842, #816, #917)