From e5aa87f73111291a8f6c9738b059976a12e1ebc4 Mon Sep 17 00:00:00 2001
From: adisbladis <adisbladis@gmail.com>
Date: Sun, 9 Jul 2023 02:07:50 +1200
Subject: [PATCH] vips: build PNG support using libspng instead of libpng

This has better performance and is the upstream libvips preferred option.
---
 pkgs/tools/graphics/vips/default.nix | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/pkgs/tools/graphics/vips/default.nix b/pkgs/tools/graphics/vips/default.nix
index 9c4099783e0c..a068bb8c0dc1 100644
--- a/pkgs/tools/graphics/vips/default.nix
+++ b/pkgs/tools/graphics/vips/default.nix
@@ -22,7 +22,7 @@
 , libtiff
 , fftw
 , lcms2
-, libpng
+, libspng
 , libimagequant
 , imagemagick
 , pango
@@ -79,7 +79,7 @@ stdenv.mkDerivation rec {
     libtiff
     fftw
     lcms2
-    libpng
+    libspng
     libimagequant
     imagemagick
     pango
@@ -101,7 +101,6 @@ stdenv.mkDerivation rec {
 
   mesonFlags = [
     "-Dcgif=disabled"
-    "-Dspng=disabled"
     "-Dpdfium=disabled"
     "-Dnifti=disabled"
   ] ++ lib.optionals (!stdenv.isDarwin) [