Implemented per OS-version artifacts

flutter_workspace.py

@@ -1808,19 +1808,50 @@ def handle_http_obj(obj, host_machine_arch, cwd, cookie_file, netrc):
         host_type = get_host_type()
         if host_type == "linux":
             host_os_release_id = get_freedesktop_os_release_id()
+            host_os_version_id = get_freedesktop_os_release_version_id()
         elif host_type == "darwin":
             host_os_release_id = "darwin"
+            host_os_version_id = get_darwin_major_version()
         elif host_type == "windows":
             host_os_release_id = "windows"
+            host_os_version_id = get_windows_major_version()
         else:
             host_os_release_id = ''
+            host_os_version_id = ''
 
-        host_specific_artifacts = arch_artifacts.get(host_os_release_id) or arch_artifacts.get('common')
+        host_specific_artifacts = arch_artifacts.get(host_os_release_id)
+        selected_from_common = not host_specific_artifacts
+        if selected_from_common:
+            host_specific_artifacts = arch_artifacts.get('common')
 
         if not host_specific_artifacts:
             print(f'handle_http_obj: No artifacts for [{host_machine_arch}, {host_os_release_id}]')
             return
 
+        # Filter artifacts by optional per-artifact os_release version.
+        # Accepts a single version string (e.g. "22.04") or a list (e.g. ["22.04", "24.04"]).
+        # Skipped when artifacts were selected from the 'common' block.
+        if not selected_from_common:
+            filtered_artifacts = []
+            for artifact in host_specific_artifacts:
+                artifact_os_release = artifact.get('os_release')
+                if artifact_os_release:
+                    os_release_versions = artifact_os_release if isinstance(artifact_os_release, list) else [artifact_os_release]
+                    if host_os_version_id not in os_release_versions:
+                        print(f'handle_http_obj: Skipping artifact {artifact.get("filename", artifact.get("endpoint", ""))} '
+                              f'(os_release={artifact_os_release}, host={host_os_version_id})')
+                        continue
+                filtered_artifacts.append(artifact)
+            host_specific_artifacts = filtered_artifacts
+        # os_release is invalid inside a 'common' block — raise an error if found there.
+        else:
+            for artifact in host_specific_artifacts:
+                if artifact.get('os_release'):
+                    raise ValueError(
+                        f'handle_http_obj: `os_release` is not allowed in a `common` artifacts block '
+                        f'(artifact: {artifact.get("filename", artifact.get("endpoint", ""))})'
+                    )
+
         url = None
         if 'url' in obj:
             url = obj['url']