skia: fix missing SkFontMgr_New_FontConfig

pkgs/by-name/sk/skia/export-SkFontMgr_New_FontConfig.patch

@@ -0,0 +1,12 @@
+diff --git a/src/ports/SkFontMgr_fontconfig.cpp b/src/ports/SkFontMgr_fontconfig.cpp
+index 7d6fd62..2cca01d 100644
+--- a/src/ports/SkFontMgr_fontconfig.cpp
++++ b/src/ports/SkFontMgr_fontconfig.cpp
+@@ -16,6 +16,7 @@
+ #include "include/core/SkString.h"
+ #include "include/core/SkTypeface.h"
+ #include "include/core/SkTypes.h"
++#include "include/ports/SkFontMgr_fontconfig.h"
+ #include "include/private/base/SkDebug.h"
+ #include "include/private/base/SkMutex.h"
+ #include "include/private/base/SkTArray.h"

pkgs/by-name/sk/skia/package.nix

@@ -35,6 +35,13 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-zHfv4OZK/nVJc2rl+dBSCc4f6qndpAKcFZtThw06+LY=";
   };
 
+  patches = [
+    # Package ladybird uses SkFontMgr_New_FontConfig, but this version of skia
+    # does not export it.
+    # https://skia.googlesource.com/skia/+/4bf56844d4a661d7317882cc545ecd978715a11e%5E!/?
+    ./export-SkFontMgr_New_FontConfig.patch
+  ];
+
   postPatch = ''
     # System zlib detection bug workaround
     substituteInPlace BUILD.gn \