Programs are not restarting

[pcoves]

Hi there 👋

I'm running tmux 3.3a on an up-to-date macOS and installed with nixDarwin.

I'm using this tmux configuration file.
And tmux starts thanks to this alacritty configuration file.

I use the same configuration accross multiple machines.
But, I can't explain why, on this particular machine, tmux-continuum fails to restart programs.
I'm mainly expecting nvim to starts on tmux launch.

I'm not sure about how the internals work.
Can it be because of how nix manage paths ?
Like (thinking as I write), is tmux able to "see" nvim ?

Any hint would be greatly appreciated on the matter.
I'm pretty sure it's neither tmux nor continuum fault as the config works fine.
But hey, worth a shot :-)

Thanks in advance!

P.