Drop compiled artifacts

Makefile

@@ -38,4 +38,5 @@ c_lib:
 .PHONY: package
 package: c_lib
 	python -m build --no-isolation
+	python ./update_sdist.py
 	twine check dist/*

update_sdist.py

@@ -0,0 +1,37 @@
+"""
+update_sdist.py
+
+Run this script to remove compiled artifacts from source distribution tarballs.
+"""
+from pathlib import Path
+from tarfile import open as tar_open
+from tempfile import TemporaryDirectory
+
+REMOVE_FILES = frozenset(['ada_url/ada.o'])
+
+
+def update_archive(file_path, removals):
+    with TemporaryDirectory() as temp_dir:
+        with tar_open(file_path, mode='r:gz') as tf:
+            tf.extractall(temp_dir)
+
+        dir_path = next(Path(temp_dir).glob('ada_url-*'))
+        all_files = []
+        for file_path in Path(temp_dir).glob('**/*'):
+            if file_path.is_dir():
+                continue
+            if str(file_path.relative_to(dir_path)) in REMOVE_FILES:
+                continue
+            all_files.append(file_path)
+
+        with tar_open(file_path, mode='w:gz') as tf:
+            for file_path in all_files:
+                arcname = file_path.relative_to(temp_dir)
+                print(arcname)
+                tf.add(file_path, arcname=arcname)
+
+
+if __name__ == '__main__':
+    for file_path in Path().glob('dist/*.tar.gz'):
+        update_archive(file_path, REMOVE_FILES)
+        print(f'Updated {file_path}')