Patch vips for faster PNG load

Author: DarthSim

CHANGELOG.md

@@ -4,6 +4,7 @@
 ### Changed
 - Update Go to 1.26.1.
 - Update harfbuzz to 13.0.1.
+- Patch vips for faster PNG load.
 
 ## [3.15.3] - 2026-03-05
 ### Changed

build-deps.sh

@@ -466,8 +466,11 @@ ninja -C _build install
 print_build_stage vips $VIPS_VERSION
 cd $DEPS_SRC/vips
 # Patch loading/saving non-8-bit JPEG XL images.
-# Remove when https://github.com/libvips/libvips/pull/4830 is merged and released.
+# Remove after update to v8.18.1
 curl -Ls https://github.com/DarthSim/libvips/commit/dd245c7da6d14cb0199373c4b248d775758a941e.patch | git apply
+# Patch expensive PNG header read.
+# Remove after update to v8.18.1
+curl -Ls https://github.com/libvips/libvips/commit/0f83bf408a01043f1a68b012178b02ce1dbd9d94.patch | git apply --exclude ChangeLog
 CFLAGS="${CFLAGS} -O3" CXXFLAGS="${CXXFLAGS} -O3" \
 meson setup _build \
   --buildtype=release \