fix: derive runtime versions from release metadata

python/ktx-daemon/src/ktx_daemon/__init__.py

@@ -1,6 +1,28 @@
 """Portable compute package for KTX."""
 
-PACKAGE_NAME = "ktx-daemon"
-VERSION = "0.1.0"
+from collections.abc import Callable
+from importlib.metadata import PackageNotFoundError, version
 
-__all__ = ["PACKAGE_NAME", "VERSION"]
+PACKAGE_NAME = "ktx-daemon"
+RUNTIME_DISTRIBUTION_NAME = "kaelio-ktx"
+
+
+def resolve_package_version(
+    version_loader: Callable[[str], str] = version,
+) -> str:
+    for distribution_name in (RUNTIME_DISTRIBUTION_NAME, PACKAGE_NAME):
+        try:
+            return version_loader(distribution_name)
+        except PackageNotFoundError:
+            continue
+    return "0.0.0+local"
+
+
+VERSION = resolve_package_version()
+
+__all__ = [
+    "PACKAGE_NAME",
+    "RUNTIME_DISTRIBUTION_NAME",
+    "VERSION",
+    "resolve_package_version",
+]

python/ktx-daemon/src/ktx_daemon/app.py

@@ -10,6 +10,7 @@ from typing import Any
 from fastapi import FastAPI, HTTPException
 from fastapi.responses import Response
 
+from ktx_daemon import VERSION
 from ktx_daemon.code_execution import (
     ExecuteCodeRequest,
     ExecuteCodeResponse,
@@ -84,7 +85,7 @@ def create_app(
     app = FastAPI(
         title="KTX Daemon",
         description="Stateless portable compute server for KTX.",
-        version="0.1.0",
+        version=VERSION,
     )
 
     @app.get("/health")