bazel-integration-testing.patch

diff tools/repositories.bzl tools/repositories.bzl
index 8364dac..42e998d 100644
--- tools/repositories.bzl
+++ tools/repositories.bzl
@@ -15,11 +15,6 @@
 load("//tools:bazel_hash_dict.bzl", "BAZEL_HASH_DICT")
 load(":common.bzl", "BAZEL_VERSIONS")
 
-_BAZEL_BINARY_PACKAGES = [
-  "http://releases.bazel.build/{version}/release/bazel-{version}{installer}-{platform}.{extension}",
-  "https://github.com/bazelbuild/bazel/releases/download/{version}/bazel-{version}{installer}-{platform}.{extension}",
-]
-
 def _get_platform_name(rctx):
   os_name = rctx.os.name.lower()
 
@@ -45,7 +40,36 @@ def _get_installer(rctx):
     extension = "sh"
     installer = "-installer"
 
-  urls = [url.format(version=version, installer=installer, platform=platform, extension=extension) for url in _BAZEL_BINARY_PACKAGES]
+  filename = "bazel-{version}{installer}-{platform}.{extension}".format(
+      version = version,
+      installer = installer,
+      platform = platform,
+      extension = extension,
+  )
+
+  kind = "release"
+  # Mimics determineURL in github.com/bazelbuild/bazelisk/bazelisk.go
+  enabled_packages = [
+      "https://releases.bazel.build/{version}/{kind}/{filename}",
+  ]
+
+  if "rc" in version:
+      version_components = version.split("rc")
+      version = version_components[0]
+      kind = "rc" + version_components[1]
+  else:
+      enabled_packages.append(
+          "https://github.com/{fork}/bazel/releases/download/{version}/{filename}")
+  urls = [
+      url.format(
+          # TODO: support other forks like bazelisk does
+          fork = "bazelbuild",
+          version=version,
+          kind = kind,
+          filename = filename,
+      )
+      for url in enabled_packages
+  ]
   args = {"url": urls, "type": "zip"}
   if version in BAZEL_HASH_DICT and platform in BAZEL_HASH_DICT[version]:
     args["sha256"] = BAZEL_HASH_DICT[version][platform]