recommended way to get Linux gdc if no package

[KC]

I am using the Solus distribution of Linux as my desktop machine, 
which has gcc 15.2.1 right now but no gdc.

I tried to get gdc by running the dlang install script mentioned 
on the downloads page,
https://dlang.org/install.sh
but the gdc installation it gave me was 11 versions back. I am 
mystified why gdc is an option of that script at all.

What is the recommended way to get gdc in this situation?