arangodb: fix MacOS references.

Needed after Homebrew/brew#16306.

Formula/a/arangodb.rb

@@ -63,24 +63,6 @@ class Arangodb < Formula
   end
 
   def install
-    if OS.mac?
-      ENV.llvm_clang
-      ENV["MACOSX_DEPLOYMENT_TARGET"] = MacOS.version
-      # Fix building bundled boost with newer LLVM by avoiding removed `std::unary_function`.
-      # .../boost/1.78.0/boost/container_hash/hash.hpp:132:33: error: no template named
-      # 'unary_function' in namespace 'std'; did you mean '__unary_function'?
-      ENV.append "CXXFLAGS", "-DBOOST_NO_CXX98_FUNCTION_BASE=1"
-    end
-
-    resource("starter").stage do
-      ldflags = %W[
-        -s -w
-        -X main.projectVersion=#{resource("starter").version}
-        -X main.projectBuild=#{Utils.git_head}
-      ]
-      system "go", "build", *std_go_args(ldflags: ldflags)
-    end
-
     arch = if Hardware::CPU.arm?
       "neon"
     elsif !build.bottle?
@@ -96,20 +78,40 @@ def install
       Hardware.oldest_cpu
     end
 
-    args = std_cmake_args + %W[
+    cmake_args = std_cmake_args + %W[
       -DHOMEBREW=ON
       -DCMAKE_BUILD_TYPE=RelWithDebInfo
       -DCMAKE_INSTALL_LOCALSTATEDIR=#{var}
       -DCMAKE_INSTALL_SYSCONFDIR=#{etc}
-      -DCMAKE_OSX_DEPLOYMENT_TARGET=#{MacOS.version}
       -DOPENSSL_ROOT_DIR=#{Formula["[email protected]"].opt_prefix}
       -DTARGET_ARCHITECTURE=#{arch}
       -DUSE_GOOGLE_TESTS=OFF
       -DUSE_JEMALLOC=OFF
       -DUSE_MAINTAINER_MODE=OFF
     ]
 
-    system "cmake", "-S", ".", "-B", "build", *args
+    if OS.mac?
+      ENV.llvm_clang
+
+      ENV["MACOSX_DEPLOYMENT_TARGET"] = MacOS.version
+      cmake_args << "-DCMAKE_OSX_DEPLOYMENT_TARGET=#{MacOS.version}"
+
+      # Fix building bundled boost with newer LLVM by avoiding removed `std::unary_function`.
+      # .../boost/1.78.0/boost/container_hash/hash.hpp:132:33: error: no template named
+      # 'unary_function' in namespace 'std'; did you mean '__unary_function'?
+      ENV.append "CXXFLAGS", "-DBOOST_NO_CXX98_FUNCTION_BASE=1"
+    end
+
+    resource("starter").stage do
+      ldflags = %W[
+        -s -w
+        -X main.projectVersion=#{resource("starter").version}
+        -X main.projectBuild=#{Utils.git_head}
+      ]
+      system "go", "build", *std_go_args(ldflags: ldflags)
+    end
+
+    system "cmake", "-S", ".", "-B", "build", *cmake_args
     system "cmake", "--build", "build"
     system "cmake", "--install", "build"
   end