Update Brewfile to specify local libgpod formula for iPod support

Formula/libgpod.rb

@@ -0,0 +1,43 @@
+class Libgpod < Formula
+  desc "Library to access the contents of classic iPods"
+  homepage "https://gtkpod.org/libgpod/"
+  url "https://github.com/neuschaefer/libgpod/archive/0dda196286f5e42be89f0b870abd9278213989a5.tar.gz"
+  sha256 "a9809f85b2b763196ac7c94903211a927efd37a24ef39c355c21b4a1bed28e52"
+  license "LGPL-2.0-only"
+
+  depends_on "autoconf" => :build
+  depends_on "automake" => :build
+  depends_on "libtool" => :build
+  depends_on "pkg-config" => :build
+
+  depends_on "glib"
+  depends_on "gdk-pixbuf"
+  depends_on "libplist"
+  depends_on "libxml2"
+  depends_on "sqlite"
+
+  def install
+    ENV["NOCONFIGURE"] = "1"
+    system "./autogen.sh"
+
+    system "./configure", *std_configure_args,
+           "--disable-dependency-tracking",
+           "--with-hal=no",
+           "--disable-udev",
+           "--without-libimobiledevice",
+           "--with-python=no",
+           "--with-mono=no",
+           "--disable-gtk-doc",
+           "--disable-gtk-doc-html",
+           "--disable-gtk-doc-pdf",
+           "--enable-more-warnings=no"
+
+    system "make", "install"
+  end
+
+  test do
+    # Ensure pkg-config can find the expected module name used by Strawberry.
+    assert_match "libgpod", shell_output("pkg-config --libs libgpod-1.0")
+  end
+end
+

Formula/libgpod/README.md

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+# libgpod (local Homebrew formula)
+
+Homebrew core does not currently ship `libgpod`, but Strawberry can optionally use it
+to support **classic iPod** devices (via `libgpod-1.0` + `gdk-pixbuf-2.0`).
+
+This formula is pinned to a known-good upstream snapshot and disables Linux-specific
+integration (udev/HAL) and language bindings to keep the build reliable on macOS.
+