Nightly pre-release on PyPI #215

	name: Nightly pre-release on PyPI

	on:
	schedule:
	# Run at midnight UTC every day
	- cron: "0 0 * * *"
	workflow_dispatch:

	env:
	HATCH_VERSION: "1.16.5"

	permissions:
	contents: read

	jobs:
	nightly-release:
	runs-on: ubuntu-latest
	environment: pypi
	permissions:
	id-token: write
	# Always build from main for consistency (scheduled and manual runs)
	steps:
	- name: Checkout main
	uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
	with:
	persist-credentials: false
	ref: main
	fetch-depth: 1

	# Reads VERSION.txt, strips any -rcN suffix, and appends .devYYYYMMDDHHMMSS
	# (e.g. 2.25.0.dev20250217000000) so each run gets a unique, PEP 440–valid pre-release version.
	- name: Set nightly version
	id: set-version
	run: \|
	BASE_VERSION=$(sed 's/-rc[0-9]*$//' VERSION.txt)
	TIMESTAMP=$(date +%Y%m%d%H%M%S)
	NIGHTLY_VERSION="${BASE_VERSION}.dev${TIMESTAMP}"
	echo "version=${NIGHTLY_VERSION}" >> "$GITHUB_OUTPUT"
	echo "${NIGHTLY_VERSION}" > VERSION.txt
	echo "Building haystack-ai version: ${NIGHTLY_VERSION}"

	- name: Install Hatch
	run: \|
	python -m pip install --upgrade pip
	pip install hatch==${{ env.HATCH_VERSION }} --uploaded-prior-to=P1D

	- name: Build Haystack
	run: hatch build

	- name: Publish to PyPI
	uses: pypa/gh-action-pypi-publish@dc37677b2e1c63e2034f94d8a5b11f265b73ba33 # v1.14.2

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