anchor.diff:      bind-key -r ">" swap-window -t +1
   
       bind-key -n M-r run "tmux send-keys -t .+ C-l Up Enter"
  -    bind-key -n M-R run "tmux send-keys -t $(hostname -s | awk -F'-' '{print tolower($NF)}') C-l Up Enter"
  +    bind-key -n M-t run "tmux send-keys -t _ C-l Up Enter"
   
       set -g pane-active-border-style fg=black
       set -g pane-border-style fg=black
  
positive.code: 
      reexec() {
          unset __NIX_DARWIN_SET_ENVIRONMENT_DONE
          unset __ETC_ZPROFILE_SOURCED
          unset __ETC_ZSHENV_SOURCED
          unset __ETC_ZSHRC_SOURCED
          exec $SHELL -c 'echo >&2 "reexecuting shell: $SHELL" && exec $SHELL -l'
      }
  
      reexec-tmux() {
          local host
          unset __NIX_DARWIN_SET_ENVIRONMENT_DONE
          unset __ETC_ZPROFILE_SOURCED
          unset __ETC_ZSHENV_SOURCED
          unset __ETC_ZSHRC_SOURCED
          host=$(hostname -s | awk -F'-' '{print tolower($NF)}')
          exec tmux new-session -A -s "$host" "$@"
      }
  
      no-sandbox() {
        tmux split-window -c '#{pane_current_path}' -p 25 $SHELL -l
      }
    '';
  
  
negative.code:     set -g status-right '#[fg=white]#(id -un)@#(hostname)   #(cat /run/current-system/darwin-version)'
    '';
  
    programs.tmux.defaultCommand = "IN_NIX_SANDBOX=1 /usr/bin/sandbox-exec -f /etc/nix/user-sandbox.sb ${config.environment.loginShell}";
    environment.etc."nix/user-sandbox.sb".text = ''
      (version 1)
      (allow default)
      (deny file-write* (subpath "/nix"))
  