chore(build): replace Abseil extension with bazel_dep and eliminate source patching (#243)

Signed-off-by: Matthieu MOREL <[email protected]>

Author: mmorel-35

.bazelrc.absl

@@ -7,9 +7,12 @@
 # This bazelrc defines the `DD_USE_ABSEIL_FOR_ENVOY` preprocessor macro, and so
 # the resulting library will use `absl::string_view` and `absl::optional`
 # instead of their standard (`std`) equivalents.
+#
+# Additionally, we configure Abseil to not use std library types by setting
+# the appropriate ABSL_OPTION_* macros, replacing the need for patching.
 
 build --enable_platform_specific_config
 
-build:linux --cxxopt='-std=c++17' --cxxopt='-Wall' --cxxopt='-Wextra' --cxxopt='-pedantic' --cxxopt='-DDD_USE_ABSEIL_FOR_ENVOY'
-build:macos --cxxopt='-std=c++17' --cxxopt='-Wall' --cxxopt='-Wextra' --cxxopt='-pedantic' --cxxopt='-DDD_USE_ABSEIL_FOR_ENVOY'
-build:windows --cxxopt='/std:c++17' --cxxopt='/DDD_USE_ABSEIL_FOR_ENVOY' --linkopt='ws2_32.lib'
+build:linux --cxxopt='-std=c++17' --cxxopt='-Wall' --cxxopt='-Wextra' --cxxopt='-pedantic' --cxxopt='-DDD_USE_ABSEIL_FOR_ENVOY' --cxxopt='-DABSL_OPTION_USE_STD_OPTIONAL=0' --cxxopt='-DABSL_OPTION_USE_STD_STRING_VIEW=0' --cxxopt='-DABSL_OPTION_USE_STD_VARIANT=0'
+build:macos --cxxopt='-std=c++17' --cxxopt='-Wall' --cxxopt='-Wextra' --cxxopt='-pedantic' --cxxopt='-DDD_USE_ABSEIL_FOR_ENVOY' --cxxopt='-DABSL_OPTION_USE_STD_OPTIONAL=0' --cxxopt='-DABSL_OPTION_USE_STD_STRING_VIEW=0' --cxxopt='-DABSL_OPTION_USE_STD_VARIANT=0'
+build:windows --cxxopt='/std:c++17' --cxxopt='/DDD_USE_ABSEIL_FOR_ENVOY' --cxxopt='/DABSL_OPTION_USE_STD_OPTIONAL=0' --cxxopt='/DABSL_OPTION_USE_STD_STRING_VIEW=0' --cxxopt='/DABSL_OPTION_USE_STD_VARIANT=0' --linkopt='ws2_32.lib'

.gitignore

@@ -1,6 +1,7 @@
 /bazel-*
 /.build/
 /.coverage/
+build/
 
 dist/
 out/

MODULE.bazel

@@ -11,10 +11,8 @@ bazel_dep(
     name = "rules_cc",
     version = "0.0.9",
 )
-# -- bazel_dep definitions -- #
-
-non_module_dependencies = use_extension("//:extensions.bzl", "non_module_dependencies")
-use_repo(
-    non_module_dependencies,
-    "com_google_absl",
+bazel_dep(
+    name = "abseil-cpp",
+    version = "20230125.1",
+    repo_name = "com_google_absl",
 )

WORKSPACE

@@ -19,8 +19,6 @@ http_archive(
   urls = ["https://github.com/abseil/abseil-cpp/archive/98eb410c93ad059f9bba1bf43f5bb916fc92a5ea.zip"],
   sha256 = "aabf6c57e3834f8dc3873a927f37eaf69975d4b28117fc7427dfb1c661542a87",
   strip_prefix = "abseil-cpp-98eb410c93ad059f9bba1bf43f5bb916fc92a5ea",
-  patches = ["//:abseil.patch"],
-  patch_args = ["-p1"],
 )
 
 http_archive(