Merge #277555: libxml2: 2.12.3 -> 2.12.3-unstable-2023-12-14

...into staging

pkgs/development/libraries/libxml2/default.nix

@@ -1,6 +1,7 @@
 { stdenv
 , lib
 , fetchurl
+, fetchFromGitLab
 , zlib
 , pkg-config
 , autoreconfHook
@@ -34,16 +35,19 @@ in
 let
 libxml = stdenv.mkDerivation rec {
   pname = "libxml2";
-  version = "2.12.3";
+  version = "2.12.3-unstable-2023-12-14";
 
   outputs = [ "bin" "dev" "out" "doc" ]
     ++ lib.optional pythonSupport "py"
     ++ lib.optional (enableStatic && enableShared) "static";
   outputMan = "bin";
 
-  src = fetchurl {
-    url = "mirror://gnome/sources/libxml2/${lib.versions.majorMinor version}/libxml2-${version}.tar.xz";
-    hash = "sha256-jI8QkjQKif8yvEStXJaTr/m8ino+FhuyOWZuXRWsmqo=";
+  src = fetchFromGitLab {
+    domain = "gitlab.gnome.org";
+    owner = "GNOME";
+    repo = "libxml2";
+    rev = "f006355eda722cae204606b9f95ba51f5ce9189b";
+    hash = "sha256-3WE90KDZq4Uaawuulc3t2+R8duCqgjEGUDN4HSXxohY=";
   };
 
   strictDeps = true;