diff -up kdepim-3.5.10/libkcal/libical/scripts/mkderivedvalues.pl.me kdepim-3.5.10/libkcal/libical/scripts/mkderivedvalues.pl
--- kdepim-3.5.10/libkcal/libical/scripts/mkderivedvalues.pl.me	2020-08-26 15:10:54.959827390 +0200
+++ kdepim-3.5.10/libkcal/libical/scripts/mkderivedvalues.pl	2020-08-26 15:09:13.778770930 +0200
@@ -1,6 +1,6 @@
 #!/usr/bin/perl 
 
-use lib '.';
+#use lib '.';
 
 require 'readvaluesfile.pl';