build: update bazel to 4.0.0

Update to the latest version of bazel (4.0.0).

.bazelrc

@@ -99,10 +99,8 @@ build:remote --define=EXECUTOR=remote
 # Setup the remote build execution servers.
 build:remote --remote_cache=remotebuildexecution.googleapis.com
 build:remote --remote_executor=remotebuildexecution.googleapis.com
-build:remote --tls_enabled=true
-build:remote --auth_enabled=true
-build:remote --remote_timeout=3600
-build:remote --jobs=50
+build:remote --remote_timeout=600
+build:remote --jobs=150
 
  # Setup the toolchain and platform for the remote build execution. The platform
 # is automatically configured by the "rbe_autoconfig" rule in the project workpsace.
@@ -117,11 +115,6 @@ build:remote --extra_execution_platforms=//tools:rbe_ubuntu1604-angular
 build:remote --host_platform=//tools:rbe_ubuntu1604-angular
 build:remote --platforms=//tools:rbe_ubuntu1604-angular
 
-  # Setup Build Event Service
-build:remote --bes_backend=buildeventservice.googleapis.com
-build:remote --bes_timeout=30s
-build:remote --bes_results_url="https://source.cloud.google.com/results/invocations/"
-
  # Set remote caching settings
 build:remote --remote_accept_cached=true
 
@@ -130,15 +123,14 @@ build:remote --remote_accept_cached=true
 build:remote --cpu=k8
 build:remote --host_cpu=k8
 
+# Set up authentication mechanism for RBE
+build:remote --google_default_credentials
+
 ###############################
 # NodeJS rules settings
 # These settings are required for rules_nodejs
 ###############################
 
-# Turn on managed directories feature in Bazel
-# This allows us to avoid installing a second copy of node_modules
-common --experimental_allow_incremental_repository_updates
-
 ####################################################
 # User bazel configuration
 # NOTE: This needs to be the *last* entry in the config.

.bazelversion

@@ -1,3 +1,3 @@
-3.4.1
+4.0.0
 # [NB: this comment has to be after the first line, see https://github.com/bazelbuild/bazelisk/issues/117]
 # When updating the Bazel version you also need to update the RBE toolchains version in WORKSPACE

.gitignore

@@ -43,6 +43,7 @@ yarn-error.log*
 .ng-dev.log
 .ng-dev.user*
 .husky/_
+.bazelrc.user
 
 # Mac OSX Finder files.
 **/.DS_Store

WORKSPACE

@@ -24,7 +24,7 @@ Angular has a dependency on the @bazel/bazelisk package which supplies it.
 Try running `yarn bazel` instead.
     (If you did run that, check that you've got a fresh `yarn install`)
 """,
-    minimum_bazel_version = "3.0.0",
+    minimum_bazel_version = "4.0.0",
 )
 
 # The NodeJS rules version must be at least the following version because:
@@ -75,9 +75,9 @@ install_bazel_dependencies(suppress_warning = True)
 # Bring in bazel_toolchains for RBE setup configuration.
 http_archive(
     name = "bazel_toolchains",
-    sha256 = "8c9728dc1bb3e8356b344088dfd10038984be74e1c8d6e92dbb05f21cabbb8e4",
-    strip_prefix = "bazel-toolchains-3.7.1",
-    url = "https://github.com/bazelbuild/bazel-toolchains/archive/3.7.1.tar.gz",
+    sha256 = "1adf5db506a7e3c465a26988514cfc3971af6d5b3c2218925cd6e71ee443fc3f",
+    strip_prefix = "bazel-toolchains-4.0.0",
+    url = "https://github.com/bazelbuild/bazel-toolchains/archive/4.0.0.tar.gz",
 )
 
 load("@bazel_toolchains//rules:environments.bzl", "clang_env")