nealrichardson commented on code in PR #37684:
URL: https://github.com/apache/arrow/pull/37684#discussion_r1346242479


##########
r/configure:
##########
@@ -175,12 +165,6 @@ find_arrow () {
     # 2. Use pkg-config to find arrow on the system
     _LIBARROW_FOUND="`${PKG_CONFIG} --variable=prefix --silence-errors 
${PKG_CONFIG_NAME}`"
     echo "*** Trying Arrow C++ found by pkg-config: $_LIBARROW_FOUND"
-  elif brew --prefix ${PKG_BREW_NAME} > /dev/null 2>&1; then
-    # 3. On macOS, look for Homebrew apache-arrow
-    #    (note that if you have pkg-config, homebrew arrow may have already 
been found)
-    _LIBARROW_FOUND=`brew --prefix ${PKG_BREW_NAME}`
-    echo "*** Trying Arrow C++ found by Homebrew: ${_LIBARROW_FOUND}"
-    export 
PKG_CONFIG_PATH="${_LIBARROW_FOUND}/lib/pkgconfig${PKG_CONFIG_PATH:+:${PKG_CONFIG_PATH}}"

Review Comment:
   The argument for keeping Homebrew support would be that `brew install 
apache-arrow --HEAD` can be used (often) to enable R package development. 
Unless we do something else (like download the latest C++ binary if the version 
number ends in .9000), this could be a step backwards for the casual 
contributor on macOS.



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