homebrew: fix new brew style offense, sync formula to v5.5.0, preserve tap bottles

- Replace Formula["python@3.12"].opt_bin with formula_opt_bin("python@3.12"):
  Homebrew's new FormulaPathMethods cop (brew 2026-06-22) fails brew style on
  the old form, which broke Deploy Homebrew Tap and Homebrew Formula Test on
  the v5.5.0 release.
- Bump the in-repo formula url/sha256 to v5.5.0 to match the tap, so the
  push-triggered tap deploy does not downgrade the tap back to v5.2.0.
- Preserve the tap's existing bottle block in deploy-tap.yml when the release
  URL is unchanged, so formula-only pushes to master no longer delete bottles
  built for the current version.

Author: sbryngelson

.github/workflows/deploy-tap.yml

@@ -112,8 +112,19 @@ jobs:
       - name: Copy formula and README into tap
         if: github.event_name != 'pull_request'
         run: |
+          set -euo pipefail
           mkdir -p tap-repo/Formula
-          cp packaging/homebrew/mfc.rb tap-repo/Formula/mfc.rb
+          # If the release URL is unchanged, keep the tap's existing bottle block so a
+          # formula-only push to master doesn't delete bottles already built for this version.
+          NEW_URL="$(grep -E '^  url ' packaging/homebrew/mfc.rb || true)"
+          OLD_URL="$(grep -E '^  url ' tap-repo/Formula/mfc.rb 2>/dev/null || true)"
+          if [[ -n "${NEW_URL}" && "${NEW_URL}" == "${OLD_URL}" ]] && grep -q '^  bottle do' tap-repo/Formula/mfc.rb; then
+            awk '/^  bottle do/,/^  end$/' tap-repo/Formula/mfc.rb > /tmp/bottle.block
+            awk '{ print } /^  head / { print ""; while ((getline line < "/tmp/bottle.block") > 0) print line }' \
+              packaging/homebrew/mfc.rb > tap-repo/Formula/mfc.rb
+          else
+            cp packaging/homebrew/mfc.rb tap-repo/Formula/mfc.rb
+          fi
           cp packaging/homebrew/README.md tap-repo/README.md
 
       - name: Commit & push if changed

packaging/homebrew/mfc.rb

@@ -6,8 +6,8 @@
 class Mfc < Formula
   desc "Exascale multiphase/multiphysics compressible flow solver"
   homepage "https://mflowcode.github.io/"
-  url "https://github.com/MFlowCode/MFC/archive/refs/tags/v5.2.0.tar.gz"
-  sha256 "aaee855302950cb6bd8497170a6737214ed9a47ad3d109258f5b27ee2b78fe3d"
+  url "https://github.com/MFlowCode/MFC/archive/refs/tags/v5.5.0.tar.gz"
+  sha256 "05499f28291654ee5cc7f4344c85b5b12707e43e8408e7a28b96e43020e42959"
   license "MIT"
   head "https://github.com/MFlowCode/MFC.git", branch: "master"
 
@@ -28,7 +28,7 @@ class Mfc < Formula
   def install
     # Create Python virtual environment inside libexec (inside Cellar for proper bottling)
     venv = libexec/"venv"
-    system Formula["python@3.12"].opt_bin/"python3.12", "-m", "venv", venv
+    system formula_opt_bin("python@3.12")/"python3.12", "-m", "venv", venv
     system venv/"bin/pip", "install", "--upgrade",
            "pip", "setuptools", "wheel",
            "setuptools-scm",