Test basic-gazelle example with incompatible flags (bazelbuild#3575)

Also update the version of Gazelle used by the example to get rid of a
usage of `cfg = "host"`.

.bazelci/presubmit.yml

@@ -332,8 +332,9 @@ tasks:
     platform: ubuntu2004
     working_directory: examples/basic-gazelle
     build_flags:
-      - "--incompatible_config_setting_private_default_visibility"
-      - "--incompatible_enforce_config_setting_visibility"
+      - "--config=incompatible"
+    test_flags:
+      - "--config=incompatible"
     build_targets:
       - "//..."
     test_targets:
@@ -343,8 +344,9 @@ tasks:
     platform: macos
     working_directory: examples/basic-gazelle
     build_flags:
-      - "--incompatible_config_setting_private_default_visibility"
-      - "--incompatible_enforce_config_setting_visibility"
+      - "--config=incompatible"
+    test_flags:
+      - "--config=incompatible"
     build_targets:
     - "//..."
     test_targets:
@@ -354,33 +356,19 @@ tasks:
     platform: windows
     working_directory: examples/basic-gazelle
     build_flags:
-    - "--incompatible_config_setting_private_default_visibility"
-    - "--incompatible_enforce_config_setting_visibility"
+    - "--config=incompatible"
     # Go requires a C toolchain that accepts options and emits errors like
     # gcc or clang. The Go SDK does not support MSVC.
-    - "--cpu=x64_windows"
-    - "--compiler=mingw-gcc"
     - '--action_env=PATH=C:\tools\msys64\usr\bin;C:\tools\msys64\bin;C:\tools\msys64\mingw64\bin;C:\python3\Scripts\;C:\python3;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\ProgramData\GooGet;C:\Program Files\Google\Compute Engine\metadata_scripts;C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\bin;C:\Program Files\Google\Compute Engine\sysprep;C:\ProgramData\chocolatey\bin;C:\Program Files\Git\cmd;C:\tools\msys64\usr\bin;c:\openjdk\bin;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files\CMake\bin;c:\ninja;c:\bazel;c:\buildkite'
     # NOTE(bazelbuild/bazel#10529): bazel doesn't register the mingw toolchain automatically.
     # We also need the host and target platforms to have the mingw constraint value.
-    - "--extra_toolchains=@local_config_cc//:cc-toolchain-x64_windows_mingw"
-    - "--host_platform=@io_bazel_rules_go//go/toolchain:windows_amd64_cgo"
-    - "--platforms=@io_bazel_rules_go//go/toolchain:windows_amd64_cgo"
-    - "--incompatible_enable_cc_toolchain_resolution"
     build_targets:
     - "//..."
     test_targets:
     - "//..."
     test_flags:
-    # Go requires a C toolchain that accepts options and emits errors like
-    # gcc or clang. The Go SDK does not support MSVC.
-    - "--cpu=x64_windows"
-    - "--compiler=mingw-gcc"
+    - "--config=incompatible"
     - '--action_env=PATH=C:\tools\msys64\usr\bin;C:\tools\msys64\bin;C:\tools\msys64\mingw64\bin;C:\python3\Scripts\;C:\python3;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\ProgramData\GooGet;C:\Program Files\Google\Compute Engine\metadata_scripts;C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\bin;C:\Program Files\Google\Compute Engine\sysprep;C:\ProgramData\chocolatey\bin;C:\Program Files\Git\cmd;C:\tools\msys64\usr\bin;c:\openjdk\bin;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files\CMake\bin;c:\ninja;c:\bazel;c:\buildkite'
-    - "--extra_toolchains=@local_config_cc//:cc-toolchain-x64_windows_mingw"
-    - "--host_platform=@io_bazel_rules_go//go/toolchain:windows_amd64_cgo"
-    - "--platforms=@io_bazel_rules_go//go/toolchain:windows_amd64_cgo"
-    - "--incompatible_enable_cc_toolchain_resolution"
     # On Windows CI, bazel (bazelisk) needs %LocalAppData% to find the cache directory.
     # We invoke bazel in tests, so the tests need this, too.
     - "--test_env=LOCALAPPDATA"

examples/basic-gazelle/.bazelrc

@@ -0,0 +1 @@
+import %workspace%/../../.bazelrc

examples/basic-gazelle/WORKSPACE

@@ -16,10 +16,10 @@ http_archive(
 # Download the bazel_gazelle ruleset.
 http_archive(
     name = "bazel_gazelle",
-    sha256 = "efbbba6ac1a4fd342d5122cbdfdb82aeb2cf2862e35022c752eaddffada7c3f3",
+    sha256 = "727f3e4edd96ea20c29e8c2ca9e8d2af724d8c7778e7923a854b2c80952bc405",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.27.0/bazel-gazelle-v0.27.0.tar.gz",
-        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.27.0/bazel-gazelle-v0.27.0.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.30.0/bazel-gazelle-v0.30.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.30.0/bazel-gazelle-v0.30.0.tar.gz",
     ],
 )