CI: Move Homebrew dependencies into Brewfile (#148335)

Co-authored-by: Brett Cannon <brett@python.org>

Author: hugovk

.github/workflows/reusable-macos.yml

@@ -38,9 +38,8 @@ jobs:
       run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
     - name: Install Homebrew dependencies
       run: |
-        brew install pkg-config openssl@3.5 xz gdbm tcl-tk@9 make
-        # Because alternate versions are not symlinked into place by default:
-        brew link --overwrite tcl-tk@9
+        brew bundle --file=Misc/Brewfile
+        brew install make
     - name: Configure CPython
       run: |
         MACOSX_DEPLOYMENT_TARGET=10.15 \

Misc/Brewfile

@@ -0,0 +1,15 @@
+brew "gdbm"
+brew "mpdecimal"
+brew "openssl@3.5"
+brew "pkg-config"
+brew "tcl-tk@9"
+brew "xz"
+brew "zstd"
+
+brew "bzip2" if OS.linux?
+brew "expat" if OS.linux?
+brew "libedit" if OS.linux?
+brew "libffi" if OS.linux?
+brew "ncurses" if OS.linux?
+brew "unzip" if OS.linux?
+brew "zlib-ng-compat" if OS.linux?