Just always install that theme file in known location

install/neovim.sh

@@ -3,4 +3,5 @@ if ! command -v neovim &>/dev/null; then
 	sudo apt update -y
 	sudo apt install -y neovim
 	git clone https://github.com/LazyVim/starter ~/.config/nvim
+	cp ~/.local/share/omakub/themes/neovim/tokyo-night.lua ~/.config/nvim/lua/plugins/theme.lua
 fi