From d367f810f5b79cfbf144208159953cfee055123f Mon Sep 17 00:00:00 2001
From: Martin Weinelt <hexa@darmstadt.ccc.de>
Date: Wed, 8 Oct 2025 01:42:02 +0200
Subject: [PATCH] gammu: fix build with cmake4

---
 pkgs/by-name/ga/gammu/package.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/by-name/ga/gammu/package.nix b/pkgs/by-name/ga/gammu/package.nix
index 95e6d79598a2..9a112787d3b4 100644
--- a/pkgs/by-name/ga/gammu/package.nix
+++ b/pkgs/by-name/ga/gammu/package.nix
@@ -44,6 +44,11 @@ stdenv.mkDerivation rec {
     cmake
   ];
 
+  cmakeFlags = [
+    # Fix build with CMake 4
+    (lib.cmakeFeature "CMAKE_POLICY_VERSION_MINIMUM" "3.10")
+  ];
+
   strictDeps = true;
 
   buildInputs = [