libcpanel-json-xs-perl software package provides module for fast and correct serialising to JSON, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libcpanel-json-xs-perl
libcpanel-json-xs-perl is installed in your system.
Make ensure the libcpanel-json-xs-perl package were installed using the commands given below,
$ sudo dpkg-query -l | grep libcpanel-json-xs-perl *
You will get with libcpanel-json-xs-perl package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Perl |
| Package | libcpanel-json-xs-perl |
| Version | 3.0104-1+b3 [s390x], 3.0104-1+ |
| Description | module for fast and correct serialising to JSON |
| Sub Section | Perl |