This is a little program that lets you write your own river layout generator in lua.
See the example (and the default) layout here. The example should be self-explanatory™.
The layout must be located at $XDG_CONFIG_HOME/river-luatile/layout.lua
or ~/.config/river-luatile/layout.lua
.
The layout namespace (for now) is always luatile
.
https://aur.archlinux.org/packages/river-luatile-git
sh
cargo install river-luatile --locked