From 0473ed3fb0cf97cebeab79dbedb0ae188c16ceff Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niklas=20Hamb=C3=BCchen?= <mail@nh2.me>
Date: Mon, 13 Jul 2026 17:17:50 +0000
Subject: [PATCH] opencv: Add JPEG-XL support

---
 pkgs/development/libraries/opencv/4.x.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/libraries/opencv/4.x.nix b/pkgs/development/libraries/opencv/4.x.nix
index 28f66d07bef3..a7412473707e 100644
--- a/pkgs/development/libraries/opencv/4.x.nix
+++ b/pkgs/development/libraries/opencv/4.x.nix
@@ -28,6 +28,8 @@
   libtiff,
   enableWebP ? true,
   libwebp,
+  enableJpegXL ? true,
+  libjxl,
   enableEXR ? !stdenv.hostPlatform.isDarwin,
   openexr,
   enableJPEG2000 ? true,
@@ -382,6 +384,9 @@ effectiveStdenv.mkDerivation {
   ++ optionals enableWebP [
     libwebp
   ]
+  ++ optionals enableJpegXL [
+    libjxl
+  ]
   ++ optionals enableEXR [
     openexr
   ]
@@ -504,6 +509,7 @@ effectiveStdenv.mkDerivation {
     (cmakeBool "WITH_IPP" enableIpp)
     (cmakeBool "WITH_TIFF" enableTIFF)
     (cmakeBool "WITH_WEBP" enableWebP)
+    (cmakeBool "WITH_JPEGXL" enableJpegXL)
     (cmakeBool "WITH_JPEG" enableJPEG)
     (cmakeBool "WITH_PNG" enablePNG)
     (cmakeBool "WITH_OPENEXR" enableEXR)