Release 0.1.37 deployment prep

update_canary.sh

@@ -22,6 +22,22 @@ echo
 
 "$ROOT/tools/build-release.sh" "$version"
 
+# Validate the exact artifact that will be published. If a previous canary is
+# available locally, exercise the real upgrade path as well as a fresh install.
+validation_args=("$package_path")
+
+if [[ -f "$ROOT/repo/canary/manifest.json" ]]; then
+    previous_package_name="$(python3 -c \
+        'import json; print(json.load(open("repo/canary/manifest.json"))["package"].rsplit("/", 1)[-1])')"
+    previous_package="$ROOT/repo/packages/$previous_package_name"
+
+    if [[ -f "$previous_package" && "$previous_package" != "$package_path" ]]; then
+        validation_args+=("$previous_package")
+    fi
+fi
+
+"$ROOT/tools/validate-trixie-release.sh" "${validation_args[@]}"
+
 hash="$(sha256sum "$package_path" | awk '{print $1}')"
 
 mkdir -p "$ROOT/repo/packages" "$ROOT/repo/canary"