pnmixer: fix build with CMake 4 and modernize derivation (#451910)

pkgs/by-name/pn/pnmixer/fix-cmake-version.patch

@@ -0,0 +1,33 @@
+From 3a4a988f6c69abece44fe2c77eab5f0a9ae7bbd2 Mon Sep 17 00:00:00 2001
+From: Stefan Frijters <sfrijters@gmail.com>
+Date: Mon, 13 Oct 2025 10:53:14 +0200
+Subject: [PATCH] Update minimum CMake version
+
+And fix compatibility with https://cmake.org/cmake/help/v4.1/policy/CMP0065.html
+---
+ CMakeLists.txt     | 2 +-
+ src/CMakeLists.txt | 1 +
+ 2 files changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 10192bf..1bb3e0c 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,4 +1,4 @@
+-cmake_minimum_required(VERSION 3.0)
++cmake_minimum_required(VERSION 3.10)
+ project(PNMixer)
+ 
+ 
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index eb04c2b..8630a21 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -56,6 +56,7 @@ target_link_libraries(pnmixer "${PNMixer_DEPS_LDFLAGS}")
+ target_link_libraries(pnmixer m)
+ target_compile_options(pnmixer PUBLIC "${PNMixer_DEPS_CFLAGS}")
+ target_compile_definitions(pnmixer PUBLIC -DHAVE_CONFIG_H)
++set_property(TARGET pnmixer PROPERTY ENABLE_EXPORTS 1)
+ 
+ install(TARGETS pnmixer DESTINATION "${CMAKE_INSTALL_BINDIR}")
+ 

pkgs/by-name/pn/pnmixer/package.nix

@@ -13,17 +13,22 @@
   pcre,
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "pnmixer";
   version = "0.7.2";
 
   src = fetchFromGitHub {
     owner = "nicklan";
     repo = "pnmixer";
-    rev = "v${version}";
-    sha256 = "0416pa933ddf4b7ph9zxhk5jppkk7ppcq1aqph6xsrfnka4yb148";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-iITliZrWZd0NvFgFzO49c94ry4T9J3jPIq61MZK6JhA=";
   };
 
+  patches = [
+    # https://github.com/nicklan/pnmixer/pull/197
+    ./fix-cmake-version.patch
+  ];
+
   nativeBuildInputs = [
     cmake
     pkg-config
@@ -39,15 +44,15 @@ stdenv.mkDerivation rec {
     pcre
   ];
 
-  meta = with lib; {
+  meta = {
     homepage = "https://github.com/nicklan/pnmixer";
     description = "ALSA volume mixer for the system tray";
-    license = licenses.gpl3;
-    platforms = platforms.linux;
-    maintainers = with maintainers; [
+    license = lib.licenses.gpl3;
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [
       campadrenalin
       romildo
     ];
     mainProgram = "pnmixer";
   };
-}
+})