feat: make VRS schema release info accessible in VRS-Python

setup.py

@@ -0,0 +1,38 @@
+from setuptools import setup
+from pathlib import Path
+import subprocess
+
+
+class VrsSubmoduleFetchError(Exception):
+    """Raise for errors during submodule metadata extraction"""
+
+
+def get_vrs_submodule_info():
+    """Retrieve the commit hash and tag from the vrs submodule."""
+    try:
+        try:
+            tag = subprocess.check_output(
+                ["git", "describe", "--tags", "--abbrev=0"], cwd="submodules/vrs", text=True
+            ).strip()
+        except subprocess.CalledProcessError:
+            raise VrsSubmoduleFetchError
+        return tag
+    except Exception as e:
+        raise VrsSubmoduleFetchError from e
+
+
+def write_metadata_file():
+    """Generate a Python module with submodule metadata."""
+    tag = get_vrs_submodule_info()
+    metadata_path = Path("src/ga4gh/vrs/submodule_metadata.py")
+    metadata_path.parent.mkdir(parents=True, exist_ok=True)
+    metadata_path.write_text(
+        f"# Auto-generated metadata from VRS schema submodule\n"
+        f"VRS_RELEASE = '{tag}'\n"
+    )
+
+
+write_metadata_file()
+
+# Use setuptools for the actual build (delegates to pyproject.toml)
+setup()

src/ga4gh/vrs/submodule_metadata.py

@@ -0,0 +1,2 @@
+# Auto-generated metadata for VRS submodule
+VRS_TAG = '2.0.0.connect.2024-04.1'