The linked script (see link at the right) allows you to automatically compile, install and update the Inkscape development version (or any other Inkscape branch) on your Ubuntu-based Linux system, in parallel to the stable Inkscape version that you are using for production (from ppa, official repositories of your distro, snap package or whatever). Tested on Linux Mint and Vanilla Ubuntu. Actually, the linked script is MIT licenced, but I cannot select that here. The symbol picture is public domain (I had to upload one to be able to sort this into a gallery of my choice).