test.yml

# ~/.tmuxinator/test.yml

name: test
root: ~/code/test

windows:
  - editor:
      layout: 6d04,166x54,0,0{83x54,0,0,0,82x54,84,0,1}
      panes:
        - # empty, will just run bash
        - v ~/.config/nvim/init.vim

forgot to mention, v is the following fish function:

function v
    nvim $argv
end