This guide assumes you already have Windows Terminal preview installed, Windows Subsystem for Linux activated, and kali installed. This configuration will likely work for any debian based distro, but we're going to use kali soely for an example.
The only thing you need to do is install the "DejaVuSansMonoForPowerline NF" font onto your windows machine. You can grab the zip that contains this font here. You will want to specifically install the font called DejaVu Sans Mono for Powerline Nerd Font Complete Mono Windows Compatible.ttf
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Open your kali shell in the windows terminal. In the tabbed area, click the down arrow and select "Settings". This should open a notepad with the configuration file for the Windows Terminal. Scroll down to the section that has your kali installation and add a new directive with the following line: