[enh] copy atime_ns and mtime_ns of external plugin resources

searx/plugins/__init__.py

@@ -17,7 +17,7 @@ along with searx. If not, see < http://www.gnu.org/licenses/ >.
 
 from hashlib import sha256
 from importlib import import_module
-from os import listdir, makedirs, remove
+from os import listdir, makedirs, remove, stat, utime
 from os.path import abspath, basename, dirname, exists, join
 from shutil import copyfile
 from sys import version_info
@@ -113,6 +113,10 @@ def sync_resource(base_path, resource_path, name, target_dir, plugin_dir):
     if not exists(resource_path) or sha_sum(dep_path) != sha_sum(resource_path):
         try:
             copyfile(dep_path, resource_path)
+            # copy atime_ns and mtime_ns, so the weak ETags (generated by
+            # the HTTP server) do not change
+            dep_stat = stat(dep_path)
+            utime(resource_path, ns=(dep_stat.st_atime_ns, dep_stat.st_mtime_ns))
         except:
             logger.critical('failed to copy plugin resource {0} for plugin {1}'.format(file_name, name))
             exit(3)