Deduplicate homebrew.yml release job by reusing build_brew.sh

The release job was duplicating ~70 lines of PyPI fetching + formula
generation that build_brew.sh already handles. Now it just calls
./bin/build_brew.sh. Also merged the two Linux-only brew setup steps.

https://claude.ai/code/session_01Vx1EsNrNySgsc8Y67dGzCn

.github/workflows/homebrew.yml

@@ -108,11 +108,6 @@ RUBY
         if: runner.os == 'Linux'
         run: |
           NONINTERACTIVE=1 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
-          echo '/home/linuxbrew/.linuxbrew/bin' >> "$GITHUB_PATH"
-
-      - name: Set up brew shellenv (Linux only)
-        if: runner.os == 'Linux'
-        run: |
           eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
           echo "HOMEBREW_PREFIX=$HOMEBREW_PREFIX" >> "$GITHUB_ENV"
           echo "HOMEBREW_CELLAR=$HOMEBREW_CELLAR" >> "$GITHUB_ENV"
@@ -177,81 +172,19 @@ RUBY
             sleep 30
           done
 
-      - name: Generate release formula with PyPI URL
+      - name: Generate release formula via build_brew.sh
+        run: ./bin/build_brew.sh
+
+      - name: Test formula install
         run: |
-          VERSION="${{ steps.version.outputs.version }}"
+          brew install --build-from-source brew_dist/archivebox.rb
-          python3 -m venv /tmp/poet-venv
+          archivebox version
-          source /tmp/poet-venv/bin/activate
-
-          pip install --quiet "archivebox==${VERSION}" homebrew-pypi-poet
-
-          echo "[+] Generating resource stanzas with homebrew-pypi-poet..."
-          RESOURCES="$(poet archivebox)"
-
-          # Get sdist URL and SHA256 from PyPI JSON API
-          PYPI_JSON="$(curl -fsSL "https://pypi.org/pypi/archivebox/${VERSION}/json" 2>/dev/null || echo '')"
-          SDIST_URL=""
-          SDIST_SHA256=""
-          if [ -n "$PYPI_JSON" ]; then
-            SDIST_URL="$(echo "$PYPI_JSON" | python3 -c "import sys,json; d=json.load(sys.stdin); print(next((u['url'] for u in d['urls'] if u['packagetype']=='sdist'), ''))" 2>/dev/null || echo '')"
-            SDIST_SHA256="$(echo "$PYPI_JSON" | python3 -c "import sys,json; d=json.load(sys.stdin); print(next((u['digests']['sha256'] for u in d['urls'] if u['packagetype']=='sdist'), ''))" 2>/dev/null || echo '')"
-          fi
-          if [ -z "$SDIST_URL" ]; then
-            SDIST_URL="https://files.pythonhosted.org/packages/source/a/archivebox/archivebox-${VERSION}.tar.gz"
-          fi
-          if [ -z "$SDIST_SHA256" ]; then
-            pip download --no-binary :all: --no-deps -d /tmp/sdist "archivebox==${VERSION}" 2>/dev/null || true
-            SDIST_SHA256="$(shasum -a 256 /tmp/sdist/*.tar.gz 2>/dev/null | awk '{print $1}' || echo '')"
-          fi
-
-          deactivate
-
-          cat > /tmp/archivebox.rb << RUBY
-# Auto-generated Homebrew formula for archivebox ${VERSION}
-# Generated by GitHub Actions on release using homebrew-pypi-poet
-#
-# Users install with:
-#   brew tap archivebox/archivebox
-#   brew install archivebox
-
-class Archivebox < Formula
-  include Language::Python::Virtualenv
-
-  desc "Self-hosted internet archiving solution"
-  homepage "https://github.com/ArchiveBox/ArchiveBox"
-  url "${SDIST_URL}"
-  sha256 "${SDIST_SHA256}"
-  license "MIT"
-  head "https://github.com/ArchiveBox/ArchiveBox.git", branch: "dev"
-
-  depends_on "python@3.13"
-
-${RESOURCES}
-
-  def install
-    virtualenv_install_with_resources
-  end
-
-  test do
-    assert_match version.to_s, shell_output("#{bin}/archivebox version")
-  end
-end
-RUBY
-
-          echo "[√] Generated release formula:"
-          ruby -c /tmp/archivebox.rb
-          cat /tmp/archivebox.rb
 
       - name: Upload formula artifact
         uses: actions/upload-artifact@v4
         with:
           name: archivebox.rb
-          path: /tmp/archivebox.rb
+          path: brew_dist/archivebox.rb
-
-      - name: Test formula install
-        run: |
-          brew install --build-from-source /tmp/archivebox.rb
-          archivebox version
 
       - name: Push to homebrew-archivebox tap
         env:
@@ -260,8 +193,8 @@ RUBY
           VERSION="${{ steps.version.outputs.version }}"
           git clone "https://x-access-token:${GH_TOKEN}@github.com/ArchiveBox/homebrew-archivebox.git" /tmp/tap
 
-          cp /tmp/archivebox.rb /tmp/tap/Formula/archivebox.rb 2>/dev/null || \
+          cp brew_dist/archivebox.rb /tmp/tap/Formula/archivebox.rb 2>/dev/null || \
-            cp /tmp/archivebox.rb /tmp/tap/archivebox.rb
+            cp brew_dist/archivebox.rb /tmp/tap/archivebox.rb
 
           cd /tmp/tap
           git config user.name "github-actions[bot]"