Support for attaching to group sessions

[hamidb]

Hello,
I am not sure if tmuxinator can handle group sessions. So I decided to open this issue.
From my understanding, tmuxinator comes short in automating something like this:

$ tmux new-session -s main
$ In "main", apply rules and layouts defined in main.yml

Now, in another terminal, connect to that existing window group:

$ tmux new-session -t main -s child
$ In "child", create a new window and apply some rules and layout.

I know we can use on_project_exit and attach: false field in the yml file but I could not reproduce the above behaviour with them.

[fritzr]

I was able to use tmux session groups by manually creating the session group using on_project_first_start.

In the main.yml file, use on_project_first_start to initialize the session with a group name:

# ~/.config/tmuxinator/main.yml
# ...
# Run on project start, the first time
on_project_first_start: tmux new-session -d -s main -t main
# ...
# define your layout here
windows:
  - xyz: # ...

Now tmuxinator start main will create the session with a group. You will get a warning duplicate session: main but everything will still work.

Then make a child.yml with a similar on_project_first_start:

# ~/.config/tmuxinator/child.yml
# ...
# Run on project start, the first time
on_project_first_start: tmux new-session -d -s child -t main
# ..
# dummy window layout here, not actually used, but needed for config to be valid
windows:
  - dummy: false

With this setup you can do:

$ tmuxinator start main
duplicate session: main
$ tmuxinator start child
duplicate session: child

# now you have two sessions that share windows:
$ tmux attach-session -t main
# elsewhere:
$ tmux attach-session -t child

Perhaps a small patch to tmuxinator would make this easier. It shouldn't be that hard to add a group: key in the yaml file, or perhaps a -g option in the CLI.

[chreniuc]

Any news on this? I'm also interested in this.