PYTHON-5433: Create an sbom-requirements.txt file to capture optional dependencies

Author: Jibola

.github/workflows/sbom.yml

@@ -8,9 +8,12 @@ name: Generate SBOM
 on:
   workflow_dispatch: {}
   push:
-    branches: ['master']
+    branches: ["master"]
     paths:
-      - 'requirements.txt'
+      - "requirements.txt"
+      - "requirements/**.txt"
+      - "!requirements/docs.txt"
+      - "!requirements/test.txt"
 
 permissions:
   contents: write
@@ -39,7 +42,8 @@ jobs:
         run: |
           python -m venv .venv
           source .venv/bin/activate
-          pip install -r requirements.txt
+          python tools/generate_sbom_requirements.py
+          pip install -r sbom-requirements.txt
           pip install .
           pip uninstall -y pip setuptools
           deactivate
@@ -73,10 +77,10 @@ jobs:
         uses: peter-evans/create-pull-request@22a9089034f40e5a961c8808d113e2c98fb63676
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
-          commit-message: 'chore: Update SBOM after dependency changes'
+          commit-message: "chore: Update SBOM after dependency changes"
           branch: auto-update-sbom-${{ github.run_id }}
           delete-branch: true
-          title: 'chore: Update SBOM'
+          title: "chore: Update SBOM"
           body: |
             ## Automated SBOM Update
 

tools/generate_sbom_requirements.py

@@ -0,0 +1,74 @@
+"""
+Concatenate requirements files into sbom-requirements.txt at repository root.
+
+- Includes repo_root/requirements.txt if present
+- Includes all files matching repo_root/requirements/**/*.txt
+- Excludes docs.txt and test.txt in the requirements folder
+- Writes output to sbom-requirements.txt (overwrites)
+"""
+from __future__ import annotations
+
+from pathlib import Path
+
+EXCLUDED_NAMES = {"docs.txt", "test.txt"}
+
+
+def collect_files(root: Path) -> list[Path]:
+    """Collect requirement files to include in SBOM requirements.
+
+    Args:
+        root (Path): The root directory of the repository.
+
+    Returns:
+        list[Path]: A list of Paths to requirement files to include in the SBOM.
+    """
+    files = []
+
+    # requirements.txt + all requirements/**/*.txt
+    for p in [root / "requirements.txt", *root.glob("requirements/**/*.txt")]:
+        if p.is_file() and p.name not in EXCLUDED_NAMES:
+            files.append(p)
+
+    return files
+
+
+def write_combined_req_files(root: Path, files: list[Path], outname: str) -> Path:
+    """Concatenate requirement files and write to outname file.
+
+    Args:
+        root (Path): The root directory of the repository.
+        files (list[Path]): A list of Paths to requirement files to include in the SBOM.
+        outname (str): The name of the output file.
+
+    Raises:
+        RuntimeError: If writing to the output file fails.
+
+    Returns:
+        Path: The path to the output file.
+    """
+    outpath = root / outname
+    try:
+        with outpath.open("w", encoding="utf-8") as f:
+            for p in files:
+                with p.open("r", encoding="utf-8") as r:
+                    content = r.read().rstrip()
+                if content:
+                    f.write(content + "\n")
+        return outpath
+    except Exception as e:
+        raise RuntimeError(f"Failed to write {outpath}: {e}") from e
+
+
+def main():
+    root = Path(__file__).parent.parent.resolve()
+
+    files = collect_files(root)
+    if not files:
+        raise FileNotFoundError(f"No requirement files found from {root}")
+
+    outpath = write_combined_req_files(root, files, "sbom-requirements.txt")
+    print(f"Wrote concatenated requirements to: {outpath}")
+
+
+if __name__ == "__main__":
+    main()