For editorconfig support, you will need to install the CLI tool.

On debian/ubuntu:

apt install editorconfig

You can put the following line in your kakrc:

hook global WinCreate ^[^*]+$ %{editorconfig-load}

That will set options from editor config for every real file you open in Kakoune. Non-file buffers such as *debug* are ignored.

Source

• Indentation-and-Tabulation
• editorconfig.kak