chore: add bazel8 ci

.aspect/bazelrc/correctness.bazelrc

@@ -24,7 +24,7 @@ test --test_verbose_timeout_warnings
 # Allow the Bazel server to check directory sources for changes. Ensures that the Bazel server
 # notices when a directory changes, if you have a directory listed in the srcs of some target.
 # Recommended when using
-# [copy_directory](https://github.com/aspect-build/bazel-lib/blob/main/docs/copy_directory.md) and
+# [copy_directory](https://github.com/bazel-contrib/bazel-lib/blob/main/docs/copy_directory.md) and
 # [rules_js](https://github.com/aspect-build/rules_js) since npm package are source directories
 # inputs to copy_directory actions.
 # Docs: https://bazel.build/reference/command-line-reference#flag--host_jvm_args

.aspect/bazelrc/performance.bazelrc

@@ -1,9 +1,3 @@
-# Don't apply `--noremote_upload_local_results` and `--noremote_accept_cached` to the disk cache.
-# If you have both `--noremote_upload_local_results` and `--disk_cache`, then this fixes a bug where
-# Bazel doesn't write to the local disk cache as it treats as a remote cache.
-# Docs: https://bazel.build/reference/command-line-reference#flag--incompatible_remote_results_ignore_disk
-build --incompatible_remote_results_ignore_disk
-
 # Directories used by sandboxed non-worker execution may be reused to avoid unnecessary setup costs.
 # Save time on Sandbox creation and deletion when many of the same kind of action run during the
 # build.
@@ -18,3 +12,16 @@ build --experimental_reuse_sandbox_directories
 # author.
 # Docs: https://bazel.build/reference/command-line-reference#flag--legacy_external_runfiles
 build --nolegacy_external_runfiles
+
+# Avoid creating a runfiles tree for binaries or tests until it is needed.
+# Docs: https://bazel.build/reference/command-line-reference#flag--build_runfile_links
+# See https://github.com/bazelbuild/bazel/issues/6627
+#
+# This may break local workflows that `build` a binary target, then run the resulting program
+# outside of `bazel run`. In those cases, the script will need to call
+# `bazel build --build_runfile_links //my/binary:target` and then execute the resulting program.
+build --nobuild_runfile_links
+
+# Needed prior to Bazel 8; see
+# https://github.com/bazelbuild/bazel/issues/20577
+coverage --build_runfile_links

.github/workflows/bazel8.bazelrc

@@ -0,0 +1,15 @@
+# Speed up all builds by not checking if external repository files have been modified.
+# Docs: https://github.com/bazelbuild/bazel/blob/1af61b21df99edc2fc66939cdf14449c2661f873/src/main/java/com/google/devtools/build/lib/bazel/repository/RepositoryOptions.java#L244
+common --noexperimental_check_external_repository_files
+
+# Don't report when the root module's lower bound for a dependency happens to be less than the resolved version.
+# This is expected and should NOT prompt an engineer to update our lower bound to match.
+# WARNING: For repository 'aspect_bazel_lib', the root module requires module version [email protected],
+# but got [email protected] in the resolved dependency graph.
+common --check_direct_dependencies=off
+
+# Directories used by sandboxed non-worker execution may be reused to avoid unnecessary setup costs.
+# Save time on Sandbox creation and deletion when many of the same kind of action run during the
+# build.
+# Docs: https://bazel.build/reference/command-line-reference#flag--reuse_sandbox_directories
+build --reuse_sandbox_directories

.github/workflows/ci.yaml

@@ -30,6 +30,7 @@ jobs:
                   m=${v::1}
                   a=(
                     "major:$m, version:\"$v\""
+                    "major:8, version:\"8.0.0\""
                     "major:6, version:\"6.5.0\""
                   )
                   printf -v j '{%s},' "${a[@]}"
@@ -135,6 +136,9 @@ jobs:
                     - bazel-version:
                           major: 6
                       bzlmod: 0
+                    # Don't run tests with Bazel 8 pre-releases by default
+                    - bazel-version:
+                          major: 8
                     # Don't run workspace smoke test under bzlmod
                     - bzlmod: 1
                       folder: e2e/workspace
@@ -174,6 +178,13 @@ jobs:
                     - bzlmod: 0
                       folder: e2e/runfiles
                 include:
+                    # Include only the bzlmod unit tests with bazel8
+                    - bazel-version:
+                          major: 8
+                      bzlmod: 1
+                      folder: .
+                      os: ubuntu
+                      config: local
                     - bazel-version:
                           major: 7
                           version: 7.4.0

MODULE.bazel

@@ -9,7 +9,7 @@ module(
 
 # Lower-bounds (minimum) versions for direct runtime dependencies.
 # Do not bump these unless rules_js requires a newer version to function.
-bazel_dep(name = "aspect_bazel_lib", version = "2.8.1")
+bazel_dep(name = "aspect_bazel_lib", version = "2.9.2")
 bazel_dep(name = "bazel_features", version = "1.9.0")
 bazel_dep(name = "bazel_skylib", version = "1.5.0")
 bazel_dep(name = "platforms", version = "0.0.5")