v1.2.9 #7

	# SPDX-License-Identifier: BSD-3-Clause
	# Copyright (c) Contributors to the OpenEXR Project.

	#
	# Releases are signed via https://github.com/sigstore/sigstore-python.
	# See https://docs.sigstore.dev for information about sigstore.
	#
	# This action creates a .tar.gz of the complete Imath source tree at
	# the given release tag, signs it via sigstore, and uploads the
	# .tar.gz and the associated .tar.gz.sigstore credential bundle.
	#
	# To verify a downloaded release at a given tag:
	#
	# % pip install sigstore
	# % sigstore verify github --cert-identity https://github.com/AcademySoftwareFoundation/Imath/.github/workflows/release-sign.yml@refs/tags/<tag> Imath-<tag>.tar.gz
	#

	name: Sign Release

	on:
	release:
	types: [published]

	permissions:
	contents: read

	jobs:

	release:
	name: Sign & upload release artifacts
	runs-on: ubuntu-latest
	env:
	RELEASE_TAG: ${{ github.ref_name }}
	permissions:
	contents: write
	id-token: write
	repository-projects: write

	steps:
	- name: Sync Repository
	uses: actions/checkout@v4
	with:
	submodules: recursive

	- name: Create Archive Name
	run: echo "IMATH_ARCHIVE=Imath-${RELEASE_TAG//v}" >> $GITHUB_ENV

	- name: Generate Archives
	run: \|
	git archive --prefix ${IMATH_ARCHIVE}/ --output ${IMATH_ARCHIVE}.zip ${RELEASE_TAG}
	git archive --prefix ${IMATH_ARCHIVE}/ --output ${IMATH_ARCHIVE}.tar.gz ${RELEASE_TAG}

	- name: Sign and Upload Archives
	uses: sigstore/[email protected]
	with:
	inputs: \|
	${{ env.IMATH_ARCHIVE }}.zip
	${{ env.IMATH_ARCHIVE }}.tar.gz
	upload-signing-artifacts: true
	release-signing-artifacts: false

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