Exclude test data

Fixes onnx#5925 in a minimally invasive way.

onnx/backend/test/data contains large test files which should not be
included in the PyPI package. This PR simply excludes them when
building the package. This reduces the size of the `onnx`
package (uncompressed) from 51MB to 12MB.

Signed-off-by: Christian Bourjau <christian.bourjau@quantco.com>

onnx/backend/test/stat_coverage.py

@@ -6,6 +6,7 @@
 
 import os
 from typing import IO, Any, Dict, List, Sequence
+from pathlib import Path
 
 from onnx import AttributeProto, defs, load
 from onnx.backend.test.case import collect_snippets
@@ -157,7 +158,7 @@ def gen_model_test_coverage(
     # Need to grab associated nodes
     attrs: Dict[str, Dict[str, List[Any]]] = {}
     model_paths: List[Any] = []
-    for rt in load_model_tests(kind="real"):
+    for rt in load_model_tests(data_dir=str(Path(__file__).parent / "data"), kind="real"):
         if rt.url.startswith("onnx/backend/test/data/light/"):
             # testing local files
             model_name = os.path.normpath(

pyproject.toml

@@ -43,10 +43,14 @@ onnx = [
     "**/*.h",
     "**/*.proto",
     "**/*.pyi",
-    "backend/test/data/**/*",
     "py.typed",
 ]
 
+[tool.setuptools.exclude-package-data]
+onnx = [
+     "backend/test/data/**/*",
+]
+
 [tool.pytest.ini_options]
 
 addopts = "--nbval --nbval-current-env --tb=short --color=yes"