From 8ef1ecd44a6b104c929bc498708042aa7ad6b5bc Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Tue, 4 Jul 2023 00:28:02 +0200
Subject: [PATCH] xercesc: Use curl network backend
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The default `socket` backend does not support TLS.
As a result, attempting to validate the following GPX file with
`SAX2Count -v=always foo.gpx` would fail with `unsupported protocol in URL`
because the Garmin URLs redirect to HTTPS.

    <gpx version="1.1" creator="foo" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd http://www.garmin.com/xmlschemas/GpxExtensions/v3 https://www.garmin.com/xmlschemas/GpxExtensionsv3.xsd" xmlns="http://www.topografix.com/GPX/1/1" xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"></gpx>

Let’s switch to curl backend.
---
 pkgs/development/libraries/xercesc/default.nix | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/xercesc/default.nix b/pkgs/development/libraries/xercesc/default.nix
index c7509bc43ab..0a254b10958 100644
--- a/pkgs/development/libraries/xercesc/default.nix
+++ b/pkgs/development/libraries/xercesc/default.nix
@@ -1,4 +1,8 @@
-{ lib, stdenv, fetchurl }:
+{ stdenv
+, lib
+, fetchurl
+, curl
+}:
 
 stdenv.mkDerivation rec {
   pname = "xerces-c";
@@ -9,8 +13,16 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-PY7Bx/lOOP7g5Mpa0eHZ2yPL86ELumJva0r6Le2v5as=";
   };
 
-  # Disable SSE2 extensions on platforms for which they are not enabled by default
-  configureFlags = [ "--disable-sse2" ];
+  buildInputs = [
+    curl
+  ];
+
+  configureFlags = [
+    # Disable SSE2 extensions on platforms for which they are not enabled by default
+    "--disable-sse2"
+    "--enable-netaccessor-curl"
+  ];
+
   enableParallelBuilding = true;
 
   meta = {