Crash when opening lazygit in a new tmux-window or pane

[Rocco-Gossmann]

Describe the bug

I like to use lazygit in combination with tmux and NeoVim.
So I have a shortcut in neovim, to open lazygit in a new TMUX-Window.

!tmux new-window 'lazygit'

Unfortunately, for a while now, this does not work.
After a bit of testing, I was able to extract this error message here.

2025/05/03 07:19:17 An error occurred! Please create an issue at: https://github.com/jesseduffield/lazygit/issues

*exec.ExitError exit status 1
github.com/jesseduffield/lazygit/pkg/app/app.go:55 (0x104d208c4)
github.com/jesseduffield/lazygit/pkg/app/entry_point.go:168 (0x104d223c0)
github.com/jesseduffield/lazygit/main.go:23 (0x104d235e8)
internal/runtime/atomic/types.go:194 (0x1045b4fe4)
runtime/asm_arm64.s:1223 (0x1045f2b54)

To Reproduce
1.) Start a TMUX-Session.
2.) Enter:

tmux split-pane 'lazygit || zsh'

Expected behavior
Not crash.

Screenshots

Version info:
lazygit --version
commit=, build date=, build source=Homebrew, version=0.50.0, os=darwin, arch=arm64, git version=2.39.5 (Apple Git-154)

git --version
git version 2.39.5 (Apple Git-154)

tmux -V
tmux 3.5a

Additional context

I've also run the --debug mode, but I only got these logs here

May  3 07:35:55 |DEBU| RunCommand command="git --version"
May  3 07:35:55 |INFO| git --version (18.643666ms)
May  3 07:35:55 |DEBU| RunCommand command="git -C /Users/st/DEV/1_workspaces/PHP/playingaround rev-parse --path-format=absolute --show-toplevel --absolute-git-dir --git-common-dir --is-bare-repository --show-superproject-working-tree"
May  3 07:35:55 |INFO| git -C /Users/st/DEV/1_workspaces/PHP/playingaround rev-parse --path-format=absolute --show-toplevel --absolute-git-dir --git-common-dir --is-bare-repository --show-superproject-working-tree (15.516666ms)
May  3 07:35:55 |ERRO| *exec.ExitError exit status 1
github.com/jesseduffield/lazygit/pkg/app/app.go:55 (0x1031a48c4)
github.com/jesseduffield/lazygit/pkg/app/entry_point.go:168 (0x1031a63c0)
github.com/jesseduffield/lazygit/main.go:23 (0x1031a75e8)
internal/runtime/atomic/types.go:194 (0x102a38fe4)
runtime/asm_arm64.s:1223 (0x102a76b54)

[drowning-cat]

Can you also try using the latest compiled version of tmux?

[Rocco-Gossmann]

Can you also try using the latest compiled version of tmux?

What do you mean? The latest release, as of this time, is version 3.5a, which is what I'm using.
Is there any other official downloads?

[drowning-cat]

1. Install tmux from version control (see README.md):

   From version control

   To get and build the latest version from source, note that this requires
   autoconf, automake, and pkg-config:

   git clone https://github.com/tmux/tmux.git  
   cd tmux  
   sh autogen.sh  
   ./configure && make  

2. These commands will build the tmux binary inside the cloned folder.

3. Terminate any running tmux sessions with: tmux kill-server

4. You can test tmux with: ./tmux (./tmux --version tmux -V)

[Rocco-Gossmann]

1. Install tmux from version control (see README.md):
   > ### From version control
   > To get and build the latest version from source, note that this requires
   > autoconf, automake, and pkg-config:
   > git clone https://github.com/tmux/tmux.git
   > cd tmux
   > sh autogen.sh
   > ./configure && make

   2. These commands will build the tmux binary inside the cloned folder.

   3. Terminate any running tmux sessions with: tmux kill-server

   4. You can test tmux with: ./tmux (./tmux --version)

Sorry, don't have C Dev Environment set up. I'm just a TMUX user reporting an Issue.