+// Some extensions rely on MW_INSTALL_PATH to find core files to include. Setting it here helps them
+// if they're included by a core script (like DatabaseUpdater) after Maintenance.php has already
+// been run.
+if ( strval( getenv( 'MW_INSTALL_PATH' ) ) === '' ) {
+ putenv( 'MW_INSTALL_PATH=' . realpath( __DIR__ . '/..' ) );
+}
+