Update the default version of core metadata to 2.4 #322

	name: CLI experience

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.sha }}
	cancel-in-progress: true

	env:
	STABLE_PYTHON_VERSION: '3.12'
	HYPERFINE_VERSION: '1.18.0'

	jobs:
	response-time:
	name: CLI responsiveness with latest Python
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Set up Python ${{ env.STABLE_PYTHON_VERSION }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ env.STABLE_PYTHON_VERSION }}

	- name: Install UV
	uses: astral-sh/setup-uv@v3

	- name: Install hyperfine
	uses: taiki-e/install-action@v2
	with:
	tool: hyperfine@${{ env.HYPERFINE_VERSION }}

	- name: Install other tools
	run: uv pip install --system --upgrade flit poetry pipenv

	- name: Install ourself
	run: \|
	uv pip install --system .
	uv pip install --system ./backend

	- name: Benchmark
	run: \|
	hyperfine -m 100 --warmup 10 -i pipenv
	hyperfine -m 100 --warmup 10 poetry
	hyperfine -m 100 --warmup 10 -i flit
	hyperfine -m 100 --warmup 10 hatch

Provide feedback