From 4a6215149ee910eb68bc17172060d55ac019a368 Mon Sep 17 00:00:00 2001
From: Bas Brands <bas@moodle.com>
Date: Tue, 14 Jan 2020 11:28:55 +0100
Subject: [PATCH 1/1] MDL-67689 theme_boost: improve theme designer mode
 performance

---
 lib/outputlib.php | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/lib/outputlib.php b/lib/outputlib.php
index d50d022a9b9..e3a354ebccc 100644
--- a/lib/outputlib.php
+++ b/lib/outputlib.php
@@ -1208,6 +1208,7 @@ class theme_config {
      */
     public function get_css_content_debug($type, $subtype, $sheet) {
 
+
         if ($type === 'scss') {
             // The SCSS file of the theme is requested.
             $csscontent = $this->get_css_content_from_scss(true);
@@ -1430,9 +1431,17 @@ class theme_config {
 
         // TODO: MDL-62757 When changing anything in this method please do not forget to check
         // if the validate() method in class admin_setting_configthemepreset needs updating too.
-
+        $cacheoptions = '';
+        if ($themedesigner) {
+            $scsscachedir = $CFG->localcachedir . '/scsscache/';
+            $cacheoptions = array(
+                  'cacheDir' => $scsscachedir,
+                  'prefix' => 'scssphp_',
+                  'forceRefresh' => false,
+            );
+        }
         // Set-up the compiler.
-        $compiler = new core_scss();
+        $compiler = new core_scss($cacheoptions);
         $compiler->prepend_raw_scss($this->get_pre_scss_code());
         if (is_string($scss)) {
             $compiler->set_file($scss);
-- 
2.17.1