lsphp72-sodium for Debian 9

I'm trying to install Magento 2 on a Debian 9 server and it requires the sodium php extension.
I have a Centos 7 server that had lsphp72-sodium available to install but I can't find the same for Debian.
Where can this be found?

Still digging. Found that Sodium is installed but needs to be version 1.13 or higher for Magento 2.

sodium support => enabled
libsodium headers version => 1.0.11
libsodium library version => 1.0.11
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The specific pecl you will want to run is this one: `/usr/local/lsws/lsphp72/bin/pecl install -f libsodium` If it still says command not found make sure you have `lsphp72-pear` installed.