From e6db9fb9321c24821f0bca958c283d77e5e9784c Mon Sep 17 00:00:00 2001
From: Guilhem Saurel <guilhem.saurel@laas.fr>
Date: Mon, 20 Oct 2025 23:42:23 +0200
Subject: [PATCH] openems: fix for CMake v4 + clean

---
 pkgs/by-name/op/openems/package.nix | 30 ++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/pkgs/by-name/op/openems/package.nix b/pkgs/by-name/op/openems/package.nix
index 22e92e81fa35..d336bf62f538 100644
--- a/pkgs/by-name/op/openems/package.nix
+++ b/pkgs/by-name/op/openems/package.nix
@@ -2,6 +2,7 @@
   stdenv,
   lib,
   fetchFromGitHub,
+  fetchpatch,
   csxcad,
   fparser,
   tinyxml,
@@ -19,17 +20,32 @@
   hyp2mat,
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "openems";
   version = "0.0.36";
 
   src = fetchFromGitHub {
     owner = "thliebig";
     repo = "openEMS";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     sha256 = "sha256-wdH+Zw7G2ZigzBMX8p3GKdFVx/AhbTNL+P3w+YjI/dc=";
   };
 
+  patches = [
+    # ref. https://github.com/thliebig/openEMS/pull/183 merged upstream
+    (fetchpatch {
+      name = "update-cmake-minimum-required.patch";
+      url = "https://github.com/thliebig/openEMS/commit/0fa7ba3aebc8ee531077973cfa136ead8e887872.patch";
+      hash = "sha256-q/ax7MZHwqSKAjx22uyV13YO/TXZa4bwikoQyItMB7E=";
+    })
+    # ref. https://github.com/thliebig/openEMS/pull/184 merged upstream
+    (fetchpatch {
+      name = "update-nf2ff-cmake-minimum-required.patch";
+      url = "https://github.com/thliebig/openEMS/commit/e02e2a8414355482145240e4c2b2464d7a26dd9e.patch";
+      hash = "sha256-y3pvim/8XUKF5k7shj0D+8P6tdfSZ3E/gxTogbRtxdo=";
+    })
+  ];
+
   nativeBuildInputs = [
     cmake
   ];
@@ -60,11 +76,11 @@ stdenv.mkDerivation rec {
       -o $out/share/openEMS/matlab/h5readatt_octave.oct
   '';
 
-  meta = with lib; {
+  meta = {
     description = "Open Source Electromagnetic Field Solver";
     homepage = "https://wiki.openems.de/index.php/Main_Page.html";
-    license = licenses.gpl3;
-    maintainers = with maintainers; [ matthuszagh ];
-    platforms = platforms.linux;
+    license = lib.licenses.gpl3;
+    maintainers = with lib.maintainers; [ matthuszagh ];
+    platforms = lib.platforms.linux;
   };
-}
+})