Allow configuration of run-clang-tidy via pyproject.toml.

To make it easier for developers to reproducibly run it.

ci/run_clang_tidy.sh

@@ -19,4 +19,4 @@ set +u && conda activate clang_tidy && set -u
 
 rapids-logger "Run clang-tidy"
 
-python cpp/scripts/run-clang-tidy.py -ignore '[.]cu$|_deps|examples/kmeans/'
+python cpp/scripts/run-clang-tidy.py

cpp/scripts/run-clang-tidy.py

@@ -21,6 +21,9 @@
 import json
 import multiprocessing as mp
 import shutil
+from pathlib import Path
+
+import tomli
 
 
 EXPECTED_VERSION = "15.0.7"
@@ -30,6 +33,17 @@
 SEPARATOR = "-" * 16
 
 
+def _read_config_file(config_file):
+    try:
+        return tomli.loads(Path(config_file).read_text())["tool"]["run-clang-tidy"]
+    except KeyError:
+        return {}
+    except tomli.TOMLDecodeError as error:
+        raise RuntimeError(
+            f"Failed to read config file '{config_file}' due to syntax error: {error}"
+        )
+
+
 def parse_args():
     argparser = argparse.ArgumentParser("Runs clang-tidy on a project")
     argparser.add_argument(
@@ -59,7 +73,22 @@ def parse_args():
     argparser.add_argument(
         "-j", type=int, default=-1, help="Number of parallel jobs to launch."
     )
+    argparser.add_argument(
+        "-c", "--config", type=str, help="Path to config file (default=pyproject.toml)."
+    )
     args = argparser.parse_args()
+
+    # Read from config file.
+    try:
+        config = _read_config_file(args.config or "./pyproject.toml")
+    except FileNotFoundError:
+        if args.config:
+            # only raise if config argument was explicitly used
+            raise RuntimeError(f"File '{args.config}' does not exist.")
+    else:
+        argparser.set_defaults(**config)
+        args = argparser.parse_args()
+
     if args.j <= 0:
         args.j = mp.cpu_count()
     args.ignore_compiled = re.compile(args.ignore) if args.ignore else None

dependencies.yaml

@@ -94,6 +94,7 @@ dependencies:
           - clang==15.0.7
           - clang-tools==15.0.7
           - ninja
+          - tomli
   common_build:
     common:
       - output_types: [conda, requirements, pyproject]

pyproject.toml

@@ -14,3 +14,7 @@ quiet-level = 3
 # TODO: Re-enable E501 with a reasonable line length
 max-line-length = 999
 ignore = ['E501']
+
+
+[tool.run-clang-tidy]
+ignore = "[.]cu$|_deps|examples/kmeans/"