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import subprocess
import json
def version_compare(v1: str, v2: str):
return json.loads($(nix-instantiate --eval --json --argstr v1 @(v1) --argstr v2 @(v2) --expr '{v1, v2}: builtins.compareVersions v1 v2'))
def latest_tag_on_branch(branch: str) -> str:
return $(git describe --abbrev=0 @(branch) e>/dev/null).strip()
def is_maintenance_branch(branch: str) -> bool:
try:
main_tag = latest_tag_on_branch('main')
current_tag = latest_tag_on_branch(branch)
return version_compare(current_tag, main_tag) < 0
except subprocess.CalledProcessError:
# This is the case before Lix releases 2.90, since main *has* no
# release tag on it.
# FIXME: delete this case after 2.91
return False
def verify_are_on_tag():
current_tag = $(git describe --tag).strip()
assert current_tag == VERSION
def git_preconditions():
# verify there is nothing in index ready to stage
proc = !(git diff-index --quiet --cached HEAD --)
assert proc.rtn == 0
# verify there is nothing *stageable* and tracked
proc = !(git diff-files --quiet)
assert proc.rtn == 0
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