hgsubversion software package provides Subversion client as Mercurial extension, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install hgsubversion
hgsubversion is installed in your system.
Make ensure the hgsubversion package were installed using the commands given below,
$ sudo dpkg-query -l | grep hgsubversion *
You will get with hgsubversion package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Version Control Systems |
| Package | hgsubversion |
| Version | 1.8.5-1ubuntu1 |
| Description | Subversion client as Mercurial extension |
| Sub Section | vcs |