From 5ad92bb45c6e2ea104f38245d7d84274589a484f Mon Sep 17 00:00:00 2001
From: Rafael Ieda <git@ieda.me>
Date: Mon, 20 Oct 2025 06:45:59 -0300
Subject: [PATCH] xc3sprog: fix build with cmake4

---
 pkgs/by-name/xc/xc3sprog/package.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/by-name/xc/xc3sprog/package.nix b/pkgs/by-name/xc/xc3sprog/package.nix
index f07fcb841464..1bbe1fbcc136 100644
--- a/pkgs/by-name/xc/xc3sprog/package.nix
+++ b/pkgs/by-name/xc/xc3sprog/package.nix
@@ -37,6 +37,13 @@ stdenv.mkDerivation rec {
     "-DCMAKE_CXX_STANDARD=14"
   ];
 
+  postPatch = ''
+    substituteInPlace CMakeLists.txt \
+      --replace-fail "cmake_minimum_required(VERSION 2.6)" "cmake_minimum_required(VERSION 3.10)"
+    substituteInPlace javr/CMakeLists.txt \
+      --replace-fail "cmake_minimum_required(VERSION 2.6)" "cmake_minimum_required(VERSION 3.10)"
+  '';
+
   meta = with lib; {
     description = "Command-line tools for programming FPGAs, microcontrollers and PROMs via JTAG";
     homepage = "https://xc3sprog.sourceforge.net/";