From c1848e8bbbe589674a3613c482e1761a49b47661 Mon Sep 17 00:00:00 2001
From: K900 <me@0upti.me>
Date: Fri, 9 May 2025 20:31:50 +0300
Subject: [PATCH] dia: use C++20

Fixes build with latest Poppler
---
 pkgs/by-name/di/dia/package.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/by-name/di/dia/package.nix b/pkgs/by-name/di/dia/package.nix
index fbb11047880d..fb9b8df29c84 100644
--- a/pkgs/by-name/di/dia/package.nix
+++ b/pkgs/by-name/di/dia/package.nix
@@ -33,8 +33,8 @@ stdenv.mkDerivation {
     hash = "sha256-U+8TUE1ULt6MNxnvw9kFjCAVBecUy2Sarof6H9+kR7Q=";
   };
 
-  # Required for the PDF plugin when building with clang.
-  CXXFLAGS = "-std=c++17";
+  # Required for the PDF plugin
+  CXXFLAGS = "-std=c++20";
 
   preConfigure = ''
     patchShebangs .