main
gh-111501: venv: do not export PS1 in activate (#105279)
gh-150258: Show relative percentage on Tachyon flamegraph (#150266)
gh-152384: pixi-packages: use `flags` to define variants (#152385)
gh-154059: Fix Tachyon flame graph time units (#154036)
gh-154580: Fix python-gdb.py pretty-printing non-ASCII strings in non-UTF-8 locales (GH-154581)
gh-64502: Fix Argument Clinic support of optional groups with defaults (GH-155191)
gh-64502: Support several optional groups on the same level in Argument Clinic (GH-155210)
gh-155207: Add --dry-run and --diff options to Argument Clinic (GH-155208)
gh-155212: List the converters defined in a C file (GH-155221)
gh-155218: Generate the option group flags in a stable order (GH-155219)
gh-155266: Fix Argument Clinic for a lone optional group (GH-155267)
Link to blurb on PyPI in the NEWS.d READMEs. (#3323)