bug: With active `zbirenbaum/copilot.lua` sidekick cant open copilot cli in tmux

[tigion]

Did you check docs and existing issues?

• I have read all the sidekick.nvim docs
• I have updated the plugin to the latest version before submitting this issue
• I have searched the existing issues of sidekick.nvim
• I have searched the existing issues of plugins related to this issue

Neovim version (nvim -v)

0.11.4

Operating system/version

macOS 26

Describe the bug

I have zbirenbaum/copilot.lua and folke/sidekick.nvim in Neovim.

My configuration for sidekick mux:

      cli = {
        mux = {
          enabled = true,
          backend = 'tmux',
          create = 'split',
        },
      },

No copilot cli is running.

• With require('sidekick.cli').toggle() it shows me Copilot cli as if it were present (orange toggle icon) in tmux and want to attach, but nothing happend.

  

• With deactivated Copilot in zbirenbaum/copilot.lua it shows me Copilot cli unused (package icon) and I can open and attach to it in a new tmux split.

A quick test with gemini cli works in booth scenarios.

[folke]

Good catch. Fixed!