From 44349dfbb5f7da67df10e423eb73dcdfedc86aee Mon Sep 17 00:00:00 2001
From: Emily <vcs@emily.moe>
Date: Tue, 16 Sep 2025 04:30:43 +0100
Subject: [PATCH] libmatroska: backport patch for CMake 4

Co-authored-by: K900 <me@0upti.me>
---
 pkgs/by-name/li/libmatroska/package.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/by-name/li/libmatroska/package.nix b/pkgs/by-name/li/libmatroska/package.nix
index 8de6786dfa64..70d8eff99a4d 100644
--- a/pkgs/by-name/li/libmatroska/package.nix
+++ b/pkgs/by-name/li/libmatroska/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  fetchpatch,
   cmake,
   libebml,
   nix-update-script,
@@ -27,6 +28,14 @@ stdenv.mkDerivation rec {
     hash = "sha256-hfu3Q1lIyMlWFWUM2Pu70Hie0rlQmua7Kq8kSIWnfHE=";
   };
 
+  patches = [
+    (fetchpatch {
+      name = "libmatroska-fix-cmake-4.patch";
+      url = "https://github.com/Matroska-Org/libmatroska/commit/dc80e194e93e6f0e25c8ad3e015d83aca2a99e10.patch";
+      hash = "sha256-2dKRJ6z5rOrLJ5agvXQ6k8TPi5rTMA3H1wCO2F5tBbc=";
+    })
+  ];
+
   nativeBuildInputs = [
     cmake
     pkg-config