xrootd: fix python bindings build

pkgs/by-name/xr/xrootd/package.nix

@@ -109,6 +109,13 @@ stdenv.mkDerivation (finalAttrs: {
   + lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p "$out/lib/systemd/system"
     install -m 644 -t "$out/lib/systemd/system" ../systemd/*.service ../systemd/*.socket
+  ''
+  # Install missing private headers needed by Python bindings
+  + ''
+    mkdir -p $dev/include/xrootd/private/XrdCks
+    cp ../src/XrdCks/XrdCksXAttr.hh $dev/include/xrootd/private/XrdCks/
+    mkdir -p $dev/include/xrootd/private/XrdOuc
+    cp ../src/XrdOuc/XrdOucXAttr.hh $dev/include/xrootd/private/XrdOuc/
   '';
 
   cmakeFlags = [

pkgs/development/python-modules/xrootd/default.nix

@@ -12,7 +12,11 @@ buildPythonPackage rec {
 
   inherit (xrootd) version src;
 
-  sourceRoot = "${src.name}/bindings/python";
+  sourceRoot = "${src.name}/python";
+
+  env.CMAKE_ARGS = lib.toString [
+    (lib.cmakeFeature "XRootD_INCLUDE_DIR" "${lib.getDev xrootd}/include/xrootd;${src}/src")
+  ];
 
   build-system = [
     cmake