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new b4e149f8 Install protobuf@21 from a local tap in macOS CI before
Homebrew removes it (#3628)
b4e149f8 is described below
commit b4e149f8190a7d32b03580b98e8a642706fc1eac
Author: CyberNative AI LLC <[email protected]>
AuthorDate: Mon Oct 19 23:06:22 2026 -0700
Install protobuf@21 from a local tap in macOS CI before Homebrew removes it
(#3628)
* Install protobuf@21 from a local tap in macOS CI
Homebrew disabled protobuf@21 on 2026-01-08 and removes disabled
formulae a year after their disable date. The formula still installs
today with a deprecation warning; once it is removed from homebrew-core,
"brew install protobuf@21" fails with "No available formula" and the
compile-with-make-cmake-protobuf21 job fails.
Install it from a local tap that holds the homebrew-core formula at
commit cced3ef1d489 without its deprecate!/disable! lines. Homebrew
pours the same bottle into the same opt/protobuf@21 prefix, so the make
and cmake steps are unchanged.
* Keep the protobuf@21 formula in homebrew-formula/
Store the pinned homebrew-core formula (commit cced3ef1d489, without
its deprecate!/disable! lines) as homebrew-formula/[email protected] and
copy it into the local tap, so the macOS job no longer downloads it on
every run. The file keeps Homebrew's BSD 2-Clause notice; it is listed
in LICENSE and excluded from the Apache header check, like the other
third-party files.
---
.github/workflows/ci-macos.yml | 8 ++-
.licenserc.yaml | 3 +
LICENSE | 34 ++++++++++
homebrew-formula/[email protected] | 133 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 177 insertions(+), 1 deletion(-)
diff --git a/.github/workflows/ci-macos.yml b/.github/workflows/ci-macos.yml
index fc4bf632..a4e4272a 100644
--- a/.github/workflows/ci-macos.yml
+++ b/.github/workflows/ci-macos.yml
@@ -29,7 +29,13 @@ jobs:
- name: install dependences
run: |
- brew install openssl gnu-getopt coreutils gflags leveldb protobuf@21
+ brew install openssl gnu-getopt coreutils gflags leveldb
+ # Homebrew disabled protobuf@21 on 2026-01-08 and removes disabled
formulae one year
+ # after that date. Install it from a local tap holding
homebrew-formula/[email protected],
+ # the homebrew-core formula pinned to a commit and without its
deprecate!/disable! lines.
+ brew tap-new --no-git local/pins
+ cp homebrew-formula/[email protected] "$(brew --repository
local/pins)/Formula/"
+ brew install local/pins/protobuf@21
- name: compile with make
run: |
diff --git a/.licenserc.yaml b/.licenserc.yaml
index f4716989..a43edc6b 100644
--- a/.licenserc.yaml
+++ b/.licenserc.yaml
@@ -222,4 +222,7 @@ header:
# bazel-central-registry
- 'registry/**'
+ # Homebrew (BSD 2-Clause)
+ - 'homebrew-formula/[email protected]'
+
comment: on-failure
diff --git a/LICENSE b/LICENSE
index 392fd8c9..f5ec0646 100644
--- a/LICENSE
+++ b/LICENSE
@@ -997,3 +997,37 @@ registry/modules/libunwind/**: licensed under the
following terms:
by Bazel from the URL pinned in source.json, remains governed by the
libunwind project's own license; see https://github.com/libunwind/libunwind
for details.
+
+--------------------------------------------------------------------------------
+
+homebrew-formula/[email protected]: licensed under the following terms:
+
+ Copied from Homebrew/homebrew-core at commit
+ cced3ef1d489fce4eba453a333619722c3a8dd17 (Formula/p/[email protected]), with
+ its deprecate!/disable! lines removed.
+
+ BSD 2-Clause License
+
+ Copyright (c) 2009-present, Homebrew contributors
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/homebrew-formula/[email protected] b/homebrew-formula/[email protected]
new file mode 100644
index 00000000..9e31c042
--- /dev/null
+++ b/homebrew-formula/[email protected]
@@ -0,0 +1,133 @@
+# Copied from Homebrew/homebrew-core at commit
cced3ef1d489fce4eba453a333619722c3a8dd17
+# (Formula/p/[email protected]) with its deprecate!/disable! lines removed, so
that it
+# still installs after Homebrew removes protobuf@21. Used by
.github/workflows/ci-macos.yml.
+#
+# BSD 2-Clause License
+#
+# Copyright (c) 2009-present, Homebrew contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+# list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation
+# and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+class ProtobufAT21 < Formula
+ desc "Protocol buffers (Google's data interchange format)"
+ homepage "https://protobuf.dev/";
+ url
"https://github.com/protocolbuffers/protobuf/releases/download/v21.12/protobuf-all-21.12.tar.gz";
+ sha256 "2c6a36c7b5a55accae063667ef3c55f2642e67476d96d355ff0acb13dbb47f09"
+ license "BSD-3-Clause"
+ revision 1
+
+ bottle do
+ sha256 cellar: :any, arm64_tahoe:
"65023d2a73ac89c385ff14782c38c1f629828d753d880f8e910a7ee19fc35e47"
+ sha256 cellar: :any, arm64_sequoia:
"9a941768e6f914b2c5a412728f3794a49a53b894b3cbe637809df93bc9b521e3"
+ sha256 cellar: :any, arm64_sonoma:
"a906fb18cfff9e07a71c34d01c74676ea28290fa6c4cfa26f68e48449abf242a"
+ sha256 arm64_ventura:
"f2997129a1170a2e472499cdfc829c03f8e8613826360837498fc42843f7bb94"
+ sha256 sonoma:
"f14d28a66a3801b28475e4913e9d5515074179ec8eec48c8fea5ec0c829e8f19"
+ sha256 ventura:
"2b155b3335e6db2264fbc0bfb5c1d89a3bc7ac2fd4a15d844d653df8b0aa2858"
+ sha256 cellar: :any_skip_relocation, arm64_linux:
"db77181834de160a35c791b30f45a43cd01c6206784a1d5ff1e7591a52ded2a7"
+ sha256 cellar: :any_skip_relocation, x86_64_linux:
"b2557598e344f5da522d3a819c63cd59a46ed043dc4d9aecfa9b721c162b7778"
+ end
+
+ keg_only :versioned_formula
+
+ # Support for protoc 21.x (protobuf C++ 3.21.x) ended on 2024-03-31
+ # Ref: https://protobuf.dev/support/version-support/#cpp
+
+ depends_on "cmake" => :build
+ depends_on "[email protected]" => [:build, :test]
+ depends_on "[email protected]" => [:build, :test]
+
+ uses_from_macos "zlib"
+
+ # Fix build with [email protected]
+ patch do
+ url
"https://github.com/protocolbuffers/protobuf/commit/da973aff2adab60a9e516d3202c111dbdde1a50f.patch?full_index=1";
+ sha256 "911925e427a396fa5e54354db8324c0178f5c602b3f819f7d471bb569cc34f53"
+ type :backport
+ resolves "https://github.com/protocolbuffers/protobuf/pull/10403";
+ end
+
+ def pythons
+ deps.map(&:to_formula)
+ .select { |f| f.name.match?(/^python@\d\.\d+$/) }
+ .map { |f| f.opt_libexec/"bin/python" }
+ end
+
+ def install
+ cmake_args = %w[
+ -Dprotobuf_BUILD_LIBPROTOC=ON
+ -Dprotobuf_INSTALL_EXAMPLES=ON
+ -Dprotobuf_BUILD_TESTS=OFF
+ ]
+
+ system "cmake", "-S", ".", "-B", "build",
+ "-DBUILD_SHARED_LIBS=ON",
+ "-Dprotobuf_BUILD_SHARED_LIBS=ON",
+ *cmake_args, *std_cmake_args
+ system "cmake", "--build", "build"
+ system "cmake", "--install", "build"
+
+ pkgshare.install "editors/proto.vim"
+ elisp.install "editors/protobuf-mode.el"
+
+ ENV.append_to_cflags "-I#{include}"
+ ENV.append_to_cflags "-L#{lib}"
+ ENV["PROTOC"] = bin/"protoc"
+
+ pip_args = ["--config-settings=--build-option=--cpp_implementation"]
+ pythons.each do |python|
+ pyext_dir =
prefix/Language::Python.site_packages(python)/"google/protobuf/pyext"
+ with_env(LDFLAGS: "-Wl,-rpath,#{rpath(source: pyext_dir)}
#{ENV.ldflags}".strip) do
+ system python, "-m", "pip", "install", *pip_args,
*std_pip_args(build_isolation: true), "./python"
+ end
+ end
+
+ system "cmake", "-S", ".", "-B", "static",
+ "-Dprotobuf_BUILD_SHARED_LIBS=OFF",
+ "-DCMAKE_POSITION_INDEPENDENT_CODE=ON",
+ "-DWITH_PROTOC=#{bin}/protoc",
+ *cmake_args, *std_cmake_args
+ system "cmake", "--build", "static"
+ lib.install buildpath.glob("static/*.a")
+ end
+
+ test do
+ testdata = <<~PROTO
+ syntax = "proto3";
+ package test;
+ message TestCase {
+ string name = 4;
+ }
+ message Test {
+ repeated TestCase case = 1;
+ }
+ PROTO
+ (testpath/"test.proto").write testdata
+ system bin/"protoc", "test.proto", "--cpp_out=."
+
+ pythons.each do |python|
+ with_env(PYTHONPATH:
(prefix/Language::Python.site_packages(python)).to_s) do
+ system python, "-c", "import google.protobuf"
+ end
+ end
+ end
+end
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