From 9e0a35863aedbb889f1d16deb038c196f1929551 Mon Sep 17 00:00:00 2001
From: Erik Arvstedt <erik.arvstedt@gmail.com>
Date: Thu, 9 Dec 2021 14:23:06 +0100
Subject: [PATCH] fontconfig: add upstream patch to fix font style detection

---
 pkgs/development/libraries/fontconfig/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/libraries/fontconfig/default.nix b/pkgs/development/libraries/fontconfig/default.nix
index 22875e51842..64e6f9a2476 100644
--- a/pkgs/development/libraries/fontconfig/default.nix
+++ b/pkgs/development/libraries/fontconfig/default.nix
@@ -1,4 +1,5 @@
 { lib, stdenv
+, fetchpatch
 , substituteAll
 , fetchurl
 , pkg-config
@@ -21,6 +22,14 @@ stdenv.mkDerivation rec {
     sha256 = "0g004r0bkkqz00mpm3svnnxn7d83158q0yb9ggxryizxfg5m5w55";
   };
 
+  patches = [
+    # Fix font style detection
+    (fetchpatch {
+      url = "https://gitlab.freedesktop.org/fontconfig/fontconfig/-/commit/92fbf14b0d7c4737ffe1e8326b7ab8ffae5548c3.patch";
+      sha256 = "1wmyax2151hg3m11q61mv25k45zk2w3xapb4p1r6wzk91zjlsgyr";
+    })
+  ];
+
   outputs = [ "bin" "dev" "lib" "out" ]; # $out contains all the config
 
   nativeBuildInputs = [