`in Replace: id matched 2 resources` error can still be reached

[jfroy]

Summary

My repo somehow still reproduces the in Replace: id matched 2 resources error originally reported in #707:

flux-local error:  Command 'flux build ks ingress-certificates --dry-run --kustomization-file /dev/stdin --path /pull/kubernetes/apps/ingress-certificates/ingress-certificates/app --namespace flux-system' failed with return code 1
✗ in Replace: id matched 2 resources

Exception ignored in: <function BaseSubprocessTransport.__del__ at 0x7901797ae7a0>
Traceback (most recent call last):
  File "/usr/local/lib/python3.12/asyncio/base_subprocess.py", line 126, in __del__
    self.close()
  File "/usr/local/lib/python3.12/asyncio/base_subprocess.py", line 104, in close
    proto.pipe.close()
  File "/usr/local/lib/python3.12/asyncio/unix_events.py", line 568, in close
    self._close(None)
  File "/usr/local/lib/python3.12/asyncio/unix_events.py", line 592, in _close
    self._loop.call_soon(self._call_connection_lost, exc)
  File "/usr/local/lib/python3.12/asyncio/base_events.py", line 795, in call_soon
    self._check_closed()
  File "/usr/local/lib/python3.12/asyncio/base_events.py", line 541, in _check_closed
    raise RuntimeError('Event loop is closed')
RuntimeError: Event loop is closed
Exception ignored in: <function BaseSubprocessTransport.__del__ at 0x7901797ae7a0>
Traceback (most recent call last):
  File "/usr/local/lib/python3.12/asyncio/base_subprocess.py", line 126, in __del__
    self.close()
  File "/usr/local/lib/python3.12/asyncio/base_subprocess.py", line 104, in close
    proto.pipe.close()
  File "/usr/local/lib/python3.12/asyncio/unix_events.py", line 568, in close
    self._close(None)
  File "/usr/local/lib/python3.12/asyncio/unix_events.py", line 592, in _close
    self._loop.call_soon(self._call_connection_lost, exc)
  File "/usr/local/lib/python3.12/asyncio/base_events.py", line 795, in call_soon
    self._check_closed()
  File "/usr/local/lib/python3.12/asyncio/base_events.py", line 541, in _check_closed
    raise RuntimeError('Event loop is closed')
RuntimeError: Event loop is closed

This issue was originally filed about the RuntimeError: Event loop is closed error, which is a separate problem where flux does not exit cleanly after reporting an earlier error.

Reproduction

mkdir repro
cd repro
git clone https://github.com/jfroy/flatops -b flux-local-754-default default
git clone https://github.com/jfroy/flatops -b flux-local-754-pull pull
sudo chown -R 1001 *
docker run --rm --workdir $PWD -v $PWD/default:/default -v $PWD/pull:/pull ghcr.io/allenporter/flux-local:main diff kustomization --unified 6 --path /pull/kubernetes/flux --path-orig /default/kubernetes/flux --strip-attrs "helm.sh/chart,checksum/config,app.kubernetes.io/version,chart" --limit-bytes 10000 --all-namespaces --sources "home-kubernetes" --output-file diff.patch

• 2024-07-22: Updated repro steps to use tags for this issue