startsiden/startsiden-playpen — comment on commit 4609e691e5b64a6d93a59b5678492a0fefff468a
File: BuySell/script/buysell_server.pl line 5
By zdk:

```Readonly``` seems unmaintained old module and has quite few bugs that haven't been fixed. And it also will mess up the test coverage, I think use of ```Const::Fast``` is better.