Files
hermes-agent/tests/hermes_cli/test_source_channel_integration.py
Teknium 8e9b1bcb58 fix(update): a lost completion is owed without adopting a retired channel
Follow-up to the lost-completion settle (review P2):

- A retired channel is adopted only after a VERIFIED completion: a lost
  one exits 0 with the owed `completion` follow-up but leaves the config
  on the retired channel; the next `hermes update` resolves the
  retirement again and adopts it (the same retry the adoption-failure
  follow-up already names).
- The settle triggers on a non-zero answer without a receipt (what
  run_completion returns for every answer that is not a correlated
  terminal receipt) and runs at most once per run (a spawn failure that
  could not finalize does not settle twice).

Test changes (test_source_channel_integration.py), each pinning the
failure invariant 3 forbids:
- test_retirement_adopts_destination_only_after_success[failed]: the
  completion answered exit 1 without a receipt and the test expected
  SystemExit; it is now an owed completion (exit 0). The channel
  assertion is unchanged: the destination is still not adopted.
- test_retirement_waits_for_correlated_completion_process[uncorrelated|
  missing]: same, an uncorrelated/missing answer was SystemExit and is
  now owed; the channel still stays on the retired one. [failure] (the
  child answered a correlated failed receipt) still raises.

Review P2.
2026-10-06 03:44:49 -07:00

504 lines
26 KiB
Python

"""Source channel tracers through real HTTP, Git, and completion boundaries."""
import argparse
from copy import deepcopy
import json
from pathlib import Path
import subprocess
from types import SimpleNamespace
import pytest
from hermes_cli import main, source_releases, update_cmd
from hermes_cli.subcommands.update import build_update_parser
from hermes_cli.update_channel import channel_record, set_install_channel
from hermes_cli.config import require_readable_config_before_write
# These tests model channel archives and the reader's own transport.
pytestmark = pytest.mark.real_release_channels
def git(root, *args):
return subprocess.run(["git", *args], cwd=root, check=True, capture_output=True,
text=True, stdin=subprocess.DEVNULL).stdout.strip()
@pytest.fixture
def source(tmp_path, monkeypatch):
home, origin, checkout = (tmp_path / name for name in ("home", "origin", "checkout"))
home.mkdir()
origin.mkdir()
monkeypatch.setenv("HERMES_HOME", str(home))
monkeypatch.setenv("HERMES_INSTALL_ROOT", str(checkout))
monkeypatch.delenv("HERMES_MANAGED", raising=False)
git(origin, "init", "-b", "main")
git(origin, "config", "user.name", "Channel Fixture")
git(origin, "config", "user.email", "fixture@example.invalid")
git(origin, "config", "commit.gpgsign", "false")
commits = []
for label in ("installed", "published", "unpublished"):
(origin / "content.txt").write_text(label)
git(origin, "add", "content.txt")
git(origin, "commit", "-m", label)
commits.append(git(origin, "rev-parse", "HEAD"))
git(tmp_path, "clone", str(origin), str(checkout))
git(checkout, "checkout", "--detach", commits[0])
monkeypatch.setattr(main, "PROJECT_ROOT", checkout)
monkeypatch.setattr("hermes_cli.config.get_project_root", lambda: checkout)
parser = argparse.ArgumentParser()
build_update_parser(parser.add_subparsers(), cmd_update=main.cmd_update)
opts = update_cmd._UpdateOptions(pre_update_version=None, gw_input_fn=None,
assume_yes=True, keep_stash=False, switch_branch=False, discard_local_changes=False)
monkeypatch.setattr(update_cmd, "_resolve_update_options", lambda *_: opts)
monkeypatch.setattr(update_cmd, "_begin_update_receipt_and_plan", lambda *_: None)
monkeypatch.setattr(main, "_run_pre_update_backup", lambda *_: None)
monkeypatch.setattr(main, "_pause_windows_gateways_for_update", lambda: None)
monkeypatch.setattr(update_cmd, "_prepare_git_command", lambda: (False, ["git"], False))
return SimpleNamespace(home=home, origin=origin, root=checkout, commits=commits, parser=parser)
def record(name, *, repository="NousResearch/hermes-agent", state="active", destination=None):
return {"schema": 1, "name": name, "repository": repository, "policy": "preview",
"state": state, "identity": {}, "nextSequence": 2, "head": None,
**({"destination": destination} if destination else {})}
def reader_result(source, name, destination=None, repository="NousResearch/hermes-agent"):
requested = record(name, repository=repository,
state="retired" if destination else "active", destination=destination)
terminal = record(destination or name, repository=repository)
terminal["head"] = {"buildId": "build-fixture", "sequence": 1}
return SimpleNamespace(requested=requested, terminal=terminal, manifest={
"schema": 1, "request": {"buildId": "build-fixture", "channel": terminal["name"],
"sequence": 1, "repository": repository, "commit": source.commits[1],
"sourceVersion": "1.2.3", "version": "0.0.1", "identity": {}, "bundleEnv": {},
"publicBase": "https://hermes-assets.nousresearch.com"}, "packages": []})
def install_reader(monkeypatch, result):
# This is the single documented adapter to ChannelReader.resolve's validated
# result. No source caller should depend on tag tuples or protocol internals.
monkeypatch.setattr(source_releases, "_resolve_channel", lambda name, repository: deepcopy(result), raising=False)
def saved(source):
return channel_record(require_readable_config_before_write(source.home / "config.yaml"), source.root)
def test_tagless_channel_check_apply_is_pinned_not_branch_tip(source, monkeypatch, capsys):
name = "preview-unknown-at-build"
set_install_channel(name, source.root)
install_reader(monkeypatch, reader_result(source, name))
update_cmd._cmd_update_check()
assert name in capsys.readouterr().out
assert git(source.root, "rev-parse", "HEAD") == source.commits[0]
completed = []
monkeypatch.setattr(update_cmd, "_complete_source_update", lambda request: completed.append(deepcopy(request)))
args = source.parser.parse_args(["update", "--channel", name, "--yes"])
update_cmd._cmd_update_impl(args, False)
assert git(source.root, "rev-parse", "HEAD") == source.commits[1]
assert (source.root / "content.txt").read_text() == "published"
assert git(source.root, "tag", "--list") == ""
assert completed[0]["expected_sha"] == source.commits[1]
assert saved(source)["channel"] == name
@pytest.mark.parametrize("outcome", ["success", "failed", "concurrent", "transient", "already-current"])
def test_retirement_adopts_destination_only_after_success(source, monkeypatch, outcome):
name = "preview-retiring"
set_install_channel(name, source.root)
original = deepcopy(saved(source))
install_reader(monkeypatch, reader_result(source, name, "stable"))
if outcome == "already-current":
git(source.root, "checkout", "--detach", source.commits[1])
requests = []
def completion(request):
requests.append(deepcopy(request))
assert saved(source) == original
assert git(source.root, "rev-parse", "HEAD") == source.commits[1]
if outcome == "concurrent":
set_install_channel("my-new-choice", source.root)
return {"exit_code": 1 if outcome == "failed" else 0, "receipt": None,
"windows_resume": None}
monkeypatch.setattr(update_cmd, "run_completion", completion)
monkeypatch.setattr(update_cmd, "_write_fleet_restart_pending_marker", lambda **kw: None)
flags = ["--channel", name] if outcome == "transient" else []
args = source.parser.parse_args(["update", "--yes", *flags])
# A completion that answered no terminal receipt ("failed") was SystemExit: after the commit
# point it is an owed completion, exit 0 (review P2) -- and still never adopts the destination.
update_cmd._cmd_update_impl(args, False)
expected = {"success": "stable", "already-current": "stable", "failed": name,
"transient": name, "concurrent": "my-new-choice"}[outcome]
assert saved(source)["channel"] == expected
assert len(requests) == 1
@pytest.mark.parametrize("channel", ["preview-not-registered", "stable", "canary", "main"])
def test_missing_channel_cannot_fall_back_to_main(source, monkeypatch, channel):
from hermes_cli import source_check
set_install_channel(channel, source.root)
def missing(name, repository):
raise ValueError("Channel does not exist")
monkeypatch.setattr(source_releases, "_resolve_channel", missing)
status = source_check.check_for_updates(install_root=source.root, home=source.home, force=True)
assert status["error"] == "release-unavailable"
assert "targetSha" not in status
before = git(source.root, "rev-parse", "HEAD")
with pytest.raises(SystemExit):
update_cmd._cmd_update_impl(source.parser.parse_args(["update", "--yes"]), False)
assert git(source.root, "rev-parse", "HEAD") == before
def test_unpublished_main_record_keeps_following_the_git_branch(source, monkeypatch):
"""main IS the source branch: until R2 publishes its record, a checkout
still updates via git instead of failing on a missing channel object."""
from hermes_cli import source_check
from hermes_cli.release_channels import ChannelNotFound
set_install_channel("main", source.root)
def unpublished(name, repository):
raise ChannelNotFound(f"Channel object not found: releases/channels/{name}.json")
monkeypatch.setattr(source_releases, "_resolve_channel", unpublished)
target = source_releases.resolve_source_target("main", ["git"], source.root)
assert target.branch == "main" and target.commit is None
status = source_check.check_for_updates(install_root=source.root, home=source.home, force=True)
assert "error" not in status, status
assert status["targetSha"] == source.commits[2]
with pytest.raises(ChannelNotFound):
source_releases.resolve_source_target("stable", ["git"], source.root)
def test_passive_check_reports_retirement_without_adopting_it(source, monkeypatch):
from hermes_cli import source_check, banner
name = "preview-retiring"
set_install_channel(name, source.root)
before = saved(source)
install_reader(monkeypatch, reader_result(source, name, "stable"))
status = source_check.check_for_updates(install_root=source.root, home=source.home, force=True)
assert status["channel"] == name
assert status["targetSha"] == source.commits[1]
assert status["retirement"] == {"destination": "stable", "sourceOnly": True}
assert status["updateAvailable"] is True
assert saved(source) == before
assert name in banner.format_banner_version_label()
def test_fork_channel_cannot_select_official_source(source, monkeypatch):
url = "https://github.com/Fixture/fork.git"
git(source.root, "config", "remote.origin.url", url)
git(source.root, "config", f"url.{source.origin}.insteadOf", url)
install_reader(monkeypatch, reader_result(source, "preview"))
with pytest.raises(ValueError, match="repository"):
source_releases.resolve_source_target("preview", ["git"], source.root)
install_reader(monkeypatch, reader_result(source, "preview", repository="Fixture/fork"))
target = source_releases.resolve_source_target("preview", ["git"], source.root)
assert target.repository == "Fixture/fork"
assert target.commit == source.commits[1]
@pytest.fixture
def channel_archive(source, monkeypatch):
from functools import partial
from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer
from threading import Thread
archive = source.home / "archive"
archive.mkdir()
class Handler(SimpleHTTPRequestHandler):
def log_message(self, *args):
pass
server = ThreadingHTTPServer(("127.0.0.1", 0), partial(Handler, directory=str(archive)))
thread = Thread(target=server.serve_forever, daemon=True)
thread.start()
base = f"http://127.0.0.1:{server.server_port}"
monkeypatch.setattr(source_releases, "_PUBLIC_BASE", base)
try:
yield archive, base
finally:
server.shutdown()
server.server_close()
thread.join()
def publish_channel_build(channel_archive, name, build_id, commit, *, sequence=1, stable=False):
from hashlib import sha256
from hermes_cli.release_channels import canonical_json
archive, base = channel_archive
prefix = f"releases/channel-builds/{build_id}/"
identity = {"token": "a" * 16, "displayName": "Preview fixture", "appNamePascal": "Fixture",
"artifactNamePascal": "Fixture", "appId": "ai.fixture.preview",
"msixAppIdWithOrg": "Fixture.Preview", "cliName": "fixture-preview",
"windowsExecutableName": "Fixture"}
version = f"1.2.{sequence}" if stable else f"0.0.{sequence}"
request = {"schema": 1, "channel": name, "buildId": build_id, "sequence": sequence,
"repository": "NousResearch/hermes-agent", "commit": commit,
"sourceVersion": f"1.2.{sequence}", "version": version, "windowsVersion": version + ".0",
"identity": identity, "bundleEnv": {}, "publicBase": base}
if stable:
request["releaseTag"] = "v" + version
manifest = {"schema": 1, "receiverProtocol": 1, "request": request, "packages": [{
"platform": "darwin", "arch": "arm64", "variant": "bundled",
"artifact": {"key": prefix + "fixture.zip", "size": 1, "sha256": "d" * 64},
"identity": identity["appId"], "version": version, "teamId": "ABCDEFGHIJ",
"feed": {"key": prefix + "darwin/stable.yml", "channel": "stable"}}]}
body = canonical_json(manifest)
channel = {"schema": 1, "name": name, "repository": request["repository"],
"policy": "stable-release" if stable else "preview", "state": "active", "identity": identity,
"revision": sequence, "nextSequence": sequence + 1, "head": {"buildId": build_id,
"sequence": sequence, "manifestKey": prefix + "build.json", "sha256": sha256(body).hexdigest()}}
for key, content in [(prefix + "build.json", body),
(f"releases/channels/{name}.json", canonical_json(channel))]:
path = archive / key
path.parent.mkdir(parents=True, exist_ok=True)
path.write_bytes(content)
return channel
def test_real_http_reader_resolves_tagless_build_through_cli(source, monkeypatch, channel_archive):
archive, _ = channel_archive
name = "http-preview-351"
channel = publish_channel_build(channel_archive, name, "b" * 32, source.commits[1])
from hermes_cli import source_check
status = source_check.check_for_updates(install_root=source.root, home=source.home,
channel=name, force=True)
assert status.get("targetSha") == source.commits[1], status
completed = []
monkeypatch.setattr(update_cmd, "_complete_source_update", lambda req: completed.append(req))
update_cmd._cmd_update_impl(source.parser.parse_args(["update", "--channel", name]), False)
assert git(source.root, "rev-parse", "HEAD") == source.commits[1]
assert completed[0]["expected_sha"] == source.commits[1]
# A mutated immutable manifest is refused, never substituted by main.
path = archive / channel["head"]["manifestKey"]
path.write_bytes(path.read_bytes() + b" ")
with pytest.raises(ValueError, match="SHA256"):
source_releases.resolve_source_target(name, ["git"], source.root)
@pytest.fixture
def retired_channel_archive(source, channel_archive):
from hermes_cli.release_channels import canonical_json
archive, _ = channel_archive
name = "offline-preview"
preview = publish_channel_build(channel_archive, name, "a" * 32, source.commits[0])
qualified = publish_channel_build(channel_archive, "stable", "b" * 32, source.commits[1], stable=True)
retired = dict(preview, state="retired", destination="stable", minimumVersion="1.0.0",
destinationHead=qualified["head"], receiverProtocol=1,
receiver={"kind": "discontinued"}, lastHead=preview["head"])
(archive / f"releases/channels/{name}.json").write_bytes(canonical_json(retired))
publish_channel_build(channel_archive, "stable", "c" * 32, source.commits[2], sequence=2, stable=True)
set_install_channel(name, source.root)
return SimpleNamespace(archive=archive, name=name, retired=retired,
qualified=qualified)
@pytest.mark.parametrize("fault", [None, "binding", "manifest"])
def test_offline_retirement_uses_qualified_build_before_current_stable(
source, monkeypatch, retired_channel_archive, fault):
from hermes_cli import source_check
from hermes_cli.release_channels import canonical_json
fixture = retired_channel_archive
original = deepcopy(saved(source))
completed = []
def completion(request):
completed.append(deepcopy(request))
assert git(source.root, "rev-parse", "HEAD") == request["expected_sha"]
return {"exit_code": 0, "receipt": None, "windows_resume": None}
monkeypatch.setattr(update_cmd, "run_completion", completion)
monkeypatch.setattr(update_cmd, "_write_fleet_restart_pending_marker", lambda **kw: None)
if fault == "binding":
fixture.retired["destinationHead"]["sequence"] += 1
(fixture.archive / f"releases/channels/{fixture.name}.json").write_bytes(canonical_json(fixture.retired))
elif fault == "manifest":
path = fixture.archive / fixture.qualified["head"]["manifestKey"]
path.write_bytes(path.read_bytes() + b" ")
status = source_check.check_for_updates(install_root=source.root, home=source.home, force=True)
args = source.parser.parse_args(["update", "--yes"])
if fault:
assert status["error"] == "release-unavailable"
with pytest.raises(SystemExit):
update_cmd._cmd_update_impl(args, False)
assert git(source.root, "rev-parse", "HEAD") == source.commits[0]
assert saved(source) == original and not completed
return
assert status.get("targetSha") == source.commits[1], status
assert status["buildId"] == fixture.qualified["head"]["buildId"]
assert saved(source) == original
update_cmd._cmd_update_impl(args, False)
assert git(source.root, "rev-parse", "HEAD") == source.commits[1]
assert saved(source)["channel"] == "stable"
status = source_check.check_for_updates(install_root=source.root, home=source.home, force=True)
assert status["targetSha"] == source.commits[2], status
update_cmd._cmd_update_impl(args, False)
assert git(source.root, "rev-parse", "HEAD") == source.commits[2]
assert [request["expected_sha"] for request in completed] == source.commits[1:]
assert "channel_retirement" not in completed[1]
@pytest.mark.parametrize("transport", ["git", "shallow", "zip"])
def test_retirement_refuses_to_downgrade_newer_source(
source, monkeypatch, retired_channel_archive, transport):
git(source.root, "checkout", "--detach", source.commits[2])
if transport == "shallow":
import shutil
shutil.rmtree(source.root)
git(source.root.parent, "clone", "--depth=1", source.origin.as_uri(), str(source.root))
if transport == "zip":
(source.root / "pyproject.toml").write_text('[project]\nversion = "1.2.2"\n')
monkeypatch.setattr(update_cmd, "_prepare_git_command", lambda: (True, ["git"], False))
original = deepcopy(saved(source))
completed = []
monkeypatch.setattr(update_cmd, "_complete_source_update", lambda request: completed.append(request))
with pytest.raises(ValueError, match="newer|downgrade"):
source_releases.resolve_source_target(retired_channel_archive.name,
None if transport == "zip" else ["git"], source.root)
with pytest.raises(SystemExit):
update_cmd._cmd_update_impl(source.parser.parse_args(["update", "--yes"]), False)
assert git(source.root, "rev-parse", "HEAD") == source.commits[2]
assert saved(source) == original and not completed
@pytest.mark.parametrize("dirty", [False, True])
def test_tagless_zip_apply_uses_pinned_source_archive(source, monkeypatch, dirty):
import urllib.request
from hermes_cli import update_cmd_zip
name = "zip-preview"
set_install_channel(name, source.root)
install_reader(monkeypatch, reader_result(source, name, "stable"))
archive = source.home / "source.zip"
git(source.origin, "archive", "--format=zip", "--prefix=hermes-agent-fixture/",
"--output=" + str(archive), source.commits[1])
urls = []
def download(url, filename):
import shutil
urls.append(url)
shutil.copyfile(archive, filename)
monkeypatch.setattr(urllib.request, "urlretrieve", download)
monkeypatch.setattr(update_cmd, "_prepare_git_command", lambda: (True, ["git"], False))
completed = []
monkeypatch.setattr(update_cmd, "_complete_source_update", lambda req: completed.append(deepcopy(req)))
if dirty:
(source.root / "notes.txt").write_text("do not remove")
with pytest.raises(SystemExit):
update_cmd._cmd_update_impl(source.parser.parse_args(["update"]), False)
assert not urls and not completed
assert (source.root / "content.txt").read_text() == "installed"
assert (source.root / "notes.txt").read_text() == "do not remove"
else:
update_cmd._cmd_update_impl(source.parser.parse_args(["update"]), False)
assert urls == [f"https://github.com/NousResearch/hermes-agent/archive/{source.commits[1]}.zip"]
assert (source.root / "content.txt").read_text() == "published"
assert completed[0]["expected_sha"] == source.commits[1]
assert completed[0]["channel_retirement"]["destination"] == "stable"
assert saved(source)["channel"] == name
@pytest.mark.parametrize("outcome", ["success", "failure", "uncorrelated", "missing"])
def test_retirement_waits_for_correlated_completion_process(source, monkeypatch, outcome):
from hermes_cli import update_receipt
name = "process-retiring"
set_install_channel(name, source.root)
original = deepcopy(saved(source))
# This child is the completion transport fixture, not a simulated PM install.
# The existing completion-process suite exercises fresh PM/selected Python.
script = source.root / "hermes_cli/update_completion.py"
script.parent.mkdir()
script.write_text(
"import json, pathlib, sys\n"
"request = json.loads(pathlib.Path(sys.argv[1]).read_text())\n"
"pathlib.Path(request['home'], 'child-request.json').write_text(json.dumps(request))\n"
f"outcome = {outcome!r}\n"
"code = 17 if outcome == 'failure' else 0\n"
"receipt = dict(request['receipt'], finished_at='fixture', outcome='failed' if code else 'success')\n"
"result = dict(schema=1, exit_code=code, receipt=receipt, windows_resume=None, update_id=receipt['update_id'])\n"
"if outcome == 'uncorrelated': result['update_id'] = 'another-update'\n"
"if outcome != 'missing': pathlib.Path(sys.argv[2]).write_text(json.dumps(result))\n"
"raise SystemExit(code)\n"
)
update_receipt.begin_update_receipt()
request = {"schema": 1, "source": str(source.root), "home": str(source.home),
"expected_sha": source.commits[1], "windows_resume": None,
"receipt": deepcopy(update_receipt._current.get().data),
"channel_retirement": {"original": original, "destination": "stable"}}
monkeypatch.setattr(update_cmd, "_write_fleet_restart_pending_marker", lambda **kw: None)
if outcome == "failure": # the child itself answered a correlated failure
with pytest.raises(SystemExit):
update_cmd._complete_source_update(request)
else:
# An uncorrelated or missing answer was SystemExit: after the commit point it is an owed
# completion, exit 0 (review P2). Adoption still waits for a verified completion.
update_cmd._complete_source_update(request)
assert saved(source)["channel"] == ("stable" if outcome == "success" else name)
child_request = json.loads((source.home / "child-request.json").read_text())
assert child_request["channel_retirement"]["original"] == original
assert child_request["expected_sha"] == source.commits[1]
def test_source_branch_record_has_no_bundle_and_explicit_branch_is_separate(source, monkeypatch):
from hermes_cli import source_check
branch_record = record("main")
branch_record.update(policy="source-branch", identity=None,
delivery={"kind": "source-branch", "branch": "main"})
install_reader(monkeypatch, SimpleNamespace(requested=branch_record,
terminal=branch_record, manifest=None))
target = source_releases.resolve_source_target("main", ["git"], source.root)
assert target.branch == "main" and target.commit is None
status = source_check.check_for_updates(install_root=source.root, home=source.home, force=True)
assert status["targetSha"] == source.commits[2], status
assert "buildId" not in status
# Explicit --branch remains usable without a channel record or release host.
def forbidden(*args):
pytest.fail("explicit source branch contacted channel authority")
monkeypatch.setattr(source_releases, "_resolve_channel", forbidden)
set_install_channel("unavailable-preview", source.root)
completed = []
monkeypatch.setattr(update_cmd, "_complete_source_update", lambda request: completed.append(request))
update_cmd._cmd_update_impl(source.parser.parse_args(["update", "--branch", "main"]), False)
assert git(source.root, "rev-parse", "HEAD") == source.commits[2]
assert "channel_retirement" not in completed[0]
assert saved(source)["channel"] == "unavailable-preview"
def test_changed_checkout_cannot_repin_selected_channel_during_apply(source, monkeypatch):
set_install_channel("preview", source.root)
install_reader(monkeypatch, reader_result(source, "preview", "stable"))
pull = update_cmd._pull_updates
def moved(*args, **kwargs):
before = pull(*args, **kwargs)
git(source.root, "checkout", "--detach", source.commits[2])
return before
monkeypatch.setattr(update_cmd, "_pull_updates", moved)
completed = []
monkeypatch.setattr(update_cmd, "_complete_source_update", lambda req: completed.append(req))
with pytest.raises(SystemExit):
update_cmd._cmd_update_impl(source.parser.parse_args(["update"]), False)
assert not completed
assert saved(source)["channel"] == "preview"
@pytest.mark.parametrize("fault", ["floor", "protocol", "build", "chain", "missing"])
def test_source_retirement_rejects_invalid_archive_constraints(source, retired_channel_archive, fault):
from hermes_cli.release_channels import canonical_json
fixture = retired_channel_archive
if fault == "floor":
fixture.retired["minimumVersion"] = "9.0.0"
elif fault == "protocol":
fixture.retired["receiverProtocol"] = 2
elif fault == "build":
fixture.retired["destinationHead"]["buildId"] = "f" * 32
elif fault == "chain":
fixture.retired["destination"] = fixture.name
else:
del fixture.retired["destinationHead"]
(fixture.archive / f"releases/channels/{fixture.name}.json").write_bytes(canonical_json(fixture.retired))
with pytest.raises(ValueError):
source_releases.resolve_source_target(fixture.name, ["git"], source.root)