StopIteration error in trec_eval.py with Python 3.12 due to importlib.resources usage

[zhihuat]

Description

When running pyserini.eval.trec_eval on Python 3.12, a StopIteration error occurs. This is due to the way importlib.resources.files().joinpath('') behaves in Python 3.12, which seems to differ from previous versions or expects a different usage pattern.

Steps to Reproduce

Run any evaluation command using pyserini.eval.trec_eval in a Python 3.12 environment.

Example command:
python -m pyserini.eval.trec_eval -c -l 2 -m map dl19-passage run.msmarco-v1-passage.bge-base-en-v1.5.lucene-hnsw.onnx.dl19.txt

Traceback

Traceback (most recent call last):
File "", line 198, in _run_module_as_main
File "", line 88, in _run_code
File ".../site-packages/pyserini/eval/trec_eval.py", line 45, in
jar_directory = str(importlib.resources.files("pyserini.resources.jars").joinpath(''))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File ".../importlib/resources/readers.py", line 94, in joinpath
return super().joinpath(*descendants)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File ".../importlib/resources/abc.py", line 117, in joinpath
target = next(names)
^^^^^^^^^^^
StopIteration

Environment

OS: Linux
Python: 3.12
Pyserini Version: 1.5.0

Proposed Fix

In pyserini/eval/trec_eval.py, line 45.

Current Code:

jar_directory = str(importlib.resources.files("pyserini.resources.jars").joinpath(''))

Fix:

Use the / operator to traverse the path, which is more robust and works correctly in Python 3.12.
jar_directory = str(importlib.resources.files("pyserini") / "resources" / "jars")