chore: remove bazel6, add bazel9 testing

.bazelversion

@@ -1 +1 @@
-7.6.0
+7.7.1

.bcr/presubmit.yml

@@ -1,7 +1,7 @@
 bcr_test_module:
   module_path: 'e2e/smoke'
   matrix:
-    bazel: ['7.x', '6.x']
+    bazel: ['7.x', '8.x', '9.x']
     platform: ['debian10', 'macos', 'ubuntu2004', 'windows']
   tasks:
     run_tests:

.github/workflows/ci-vanilla-bazel.yaml

@@ -21,6 +21,8 @@ jobs:
           m=${v::1}
           a=(
             "major:$m, version:\"$v\""
+            "major:8, version:\"8.7.0\""
+            "major:9, version:\"9.1.1\""
           )
           printf -v j '{%s},' "${a[@]}"
           echo "res=[${j%,}]" | tee -a $GITHUB_OUTPUT
@@ -58,14 +60,28 @@ jobs:
           # Root workspace is only bzlmod
           - folder: .
             bzlmod: 0
-          # Don't test MacOS and Windows against secondary bazel version to minimize minutes (billed at 10X and 2X respectively)
+          # WORKSPACE is disabled by default in Bazel 8 and removed in Bazel 9,
+          # so only test WORKSPACE mode on the primary (Bazel 7) version
+          - bzlmod: 0
+            bazel-version:
+              major: 8
+          - bzlmod: 0
+            bazel-version:
+              major: 9
+          # Don't test MacOS and Windows against secondary bazel versions to minimize minutes (billed at 10X and 2X respectively)
           # https://docs.github.com/en/billing/managing-billing-for-github-actions/about-billing-for-github-actions#included-storage-and-minutes
           - os: macos
             bazel-version:
-              major: 6
+              major: 8
+          - os: macos
+            bazel-version:
+              major: 9
+          - os: windows
+            bazel-version:
+              major: 8
           - os: windows
             bazel-version:
-              major: 6
+              major: 9
           # Linux on the primary bazel version is tested on Aspect Workflows
           - os: ubuntu
             bazel-version:

MODULE.bazel

@@ -2,6 +2,7 @@
 
 module(
     name = "aspect_rules_terser",
+    bazel_compatibility = [">=7.0.0"],
     compatibility_level = 1,
 )
 
@@ -21,6 +22,14 @@ bazel_dep(name = "aspect_rules_lint", version = "2.6.0", dev_dependency = True)
 bazel_dep(name = "bazelrc-preset.bzl", version = "1.9.2", dev_dependency = True)
 bazel_dep(name = "buildifier_prebuilt", version = "8.5.1.2", dev_dependency = True)
 
+# Transitive dep of aspect_rules_js; older versions resolved by the 2.0.0
+# lower-bound fail on Bazel 9 (removed `incompatible_use_toolchain_transition`).
+bazel_dep(name = "rules_nodejs", version = "6.7.4", dev_dependency = True)
+
+# Transitive dep of aspect_rules_lint's gazelle; the 0.42.0 it resolves
+# fails on Bazel 9 (native CcInfo symbol removed).
+bazel_dep(name = "rules_go", version = "0.61.1", dev_dependency = True)
+
 npm = use_extension("@aspect_rules_js//npm:extensions.bzl", "npm", dev_dependency = True)
 npm.npm_translate_lock(
     name = "npm",

e2e/smoke/MODULE.bazel

@@ -7,6 +7,10 @@ local_path_override(
 bazel_dep(name = "aspect_rules_js", version = "2.0.0", dev_dependency = True)
 bazel_dep(name = "aspect_bazel_lib", version = "2.19.3", dev_dependency = True)
 
+# Transitive dep of aspect_rules_js; older versions resolved by the 2.0.0
+# lower-bound fail on Bazel 9 (removed `incompatible_use_toolchain_transition`).
+bazel_dep(name = "rules_nodejs", version = "6.7.4", dev_dependency = True)
+
 npm = use_extension("@aspect_rules_js//npm:extensions.bzl", "npm", dev_dependency = True)
 npm.npm_translate_lock(
     name = "npm",

tools/BUILD.bazel

@@ -2,5 +2,8 @@ load("@bazelrc-preset.bzl", "bazelrc_preset")
 
 bazelrc_preset(
     name = "preset",
-    tags = ["skip-on-bazel6"],
+    tags = [
+        "skip-on-bazel8",
+        "skip-on-bazel9",
+    ],
 )