Retry release smoke package install

.github/scripts/install_release_package.py

@@ -6,19 +6,41 @@
 import importlib.metadata
 import subprocess
 import sys
+import time
 from collections.abc import Sequence
 
+RELEASE_INSTALL_ATTEMPTS = 31
+RELEASE_INSTALL_RETRY_SECONDS = 30
+
 
 def _pip_install(args: Sequence[str]) -> None:
     subprocess.check_call([sys.executable, "-m", "pip", "install", *args])
 
 
+def _pip_install_with_retries(args: Sequence[str]) -> None:
+    for attempt in range(1, RELEASE_INSTALL_ATTEMPTS + 1):
+        try:
+            _pip_install(args)
+            return
+        except subprocess.CalledProcessError:
+            if attempt == RELEASE_INSTALL_ATTEMPTS:
+                raise
+            print(
+                "Package was not installable yet; retrying in "
+                f"{RELEASE_INSTALL_RETRY_SECONDS}s "
+                f"({attempt}/{RELEASE_INSTALL_ATTEMPTS})",
+                flush=True,
+            )
+            time.sleep(RELEASE_INSTALL_RETRY_SECONDS)
+
+
 def install_package(args: argparse.Namespace) -> None:
     package = f"temporalio=={args.version}"
     if args.dependency_index_url:
-        _pip_install(
+        _pip_install_with_retries(
             [
                 "--prefer-binary",
+                "--no-cache-dir",
                 "--index-url",
                 args.index_url,
                 "--no-deps",
@@ -37,7 +59,15 @@ def install_package(args: argparse.Namespace) -> None:
                 ]
             )
     else:
-        _pip_install(["--prefer-binary", "--index-url", args.index_url, package])
+        _pip_install_with_retries(
+            [
+                "--prefer-binary",
+                "--no-cache-dir",
+                "--index-url",
+                args.index_url,
+                package,
+            ]
+        )
 
     subprocess.check_call([sys.executable, "-m", "pip", "check"])