From 352e6934cc949f6e98c5c79cf6091d5d1516ef52 Mon Sep 17 00:00:00 2001
From: Yureka <yureka@cyberchaos.dev>
Date: Mon, 29 Sep 2025 10:29:07 +0200
Subject: [PATCH] lensfun: fix build with cmake 4

---
 pkgs/by-name/le/lensfun/package.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkgs/by-name/le/lensfun/package.nix b/pkgs/by-name/le/lensfun/package.nix
index c6d058c55b67..d59644ce0c73 100644
--- a/pkgs/by-name/le/lensfun/package.nix
+++ b/pkgs/by-name/le/lensfun/package.nix
@@ -45,6 +45,16 @@ stdenv.mkDerivation {
     mkdir -p data/db
     tar xvf $TMPDIR/db/version_1.tar -C data/db
     date +%s > data/db/timestamp.txt
+  ''
+  # Backport CMake 4 support
+  # This is already on master, but not yet in a stable release:
+  # https://github.com/lensfun/lensfun/issues/2520
+  # https://github.com/lensfun/lensfun/commit/011de2e85813ff496a85404b30891352555de077
+  + ''
+    substituteInPlace CMakeLists.txt \
+      --replace-fail \
+        'CMAKE_MINIMUM_REQUIRED(VERSION 2.8.12 FATAL_ERROR )' \
+        'CMAKE_MINIMUM_REQUIRED(VERSION 3.12 FATAL_ERROR)'
   '';
 
   nativeBuildInputs = [