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#!/usr/bin/env python3
# Copyright © The Debusine Developers
# See the AUTHORS file at the top-level directory of this distribution
#
# This file is part of Debusine. It is subject to the license terms
# in the LICENSE file found in the top-level directory of this
# distribution. No part of Debusine, including this file, may be copied,
# modified, propagated, or distributed except according to the terms
# contained in the LICENSE file.
"""
Print a PEP-440-compatible version identifier.
This identifier can be passed in the `SETUPTOOLS_SCM_PRETEND_VERSION`
environment variable. While dh-python would try to do this for us if left
to its own devices, there are various corner cases that it doesn't handle.
"""
import re
from argparse import ArgumentParser
from pathlib import Path
parser = ArgumentParser()
parser.add_argument("upstream_version")
args = parser.parse_args()
salsa_ci_hatchling_version = Path("debian/.salsa-ci-hatchling-version")
if "+salsaci+" in args.upstream_version and salsa_ci_hatchling_version.exists():
# When building in CI, we get git-derived version information passed
# through to us, since we don't have access to git metadata when
# building the package.
print(salsa_ci_hatchling_version.read_text())
else:
# Treat pre-releases as essentially being repackagings of the same
# upstream version. (In particular, this is true for backports.)
version = re.sub(r"~.*", "", args.upstream_version)
# "+something" suffixes are most likely to be present in stable updates.
# It's probably best to treat these as repackagings of the same upstream
# version too; a PEP-440-style post-release isn't quite expressive
# enough.
version = re.sub(r"\+.*", "", version)
print(version)
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