tmux.nix

{
  programs.tmux = {
    enable = true;

    baseIndex = 1;
    escapeTime = 10;

    historyLimit = 10000;

    terminal = "tmux-256color";
    extraConfig = ''
      set -sg terminal-overrides ",*:RGB"

      set -g allow-passthrough on
      set -ga update-environment TERM
      set -ga update-environment TERM_PROGRAM

      set -s focus-events on

      set -g set-titles on

      setw -g automatic-rename on
      set -g renumber-windows on

      setw -g monitor-activity on
      set -g visual-activity off

      set -g status-keys "vi"
      set -g mode-keys "vi"

      set -g pane-border-style fg=black
      set -g pane-active-border-style fg=grey

      # status bar

      set-option -g status-bg black
      set-option -g status-fg grey

      set -g window-status-format "#{?window_last_flag,#[fg=black]\uE0B0 #[fg=black]#I #W #[bg=black]#[fg=color236]\uE0B0, #I #W }"
      set -g window-status-current-format "#[fg=black,bg=color244]\uE0B0 #[fg=black,bg=color244]#I #W #[fg=color244,bg=black]\uE0B0"

      set -g window-status-activity-style "fg=white,bg=#{?window_last_flag,color236,black},underscore"
      set -g window-status-last-style fg=black,bg=color236,bold


      set -g status-right "#{?client_prefix,,}  #{?mouse,🖱️,} \uE0B3 #(whoami) \uE0B3 %I:%M %p \uE0B3 %d %b"


      # binds (most are borrowed from `https://github.com/gpakosz/.tmux`)

      bind Tab last-window
      bind C-c new-session

      bind - split-window -v
      bind _ split-window -h

      bind -r h select-pane -L
      bind -r j select-pane -D
      bind -r k select-pane -U
      bind -r l select-pane -R

      bind > swap-pane -D
      bind < swap-pane -U

      bind . swap-window -t +1
      bind , swap-window -t -1

      bind -r H resize-pane -L 2
      bind -r J resize-pane -D 2
      bind -r K resize-pane -U 2
      bind -r L resize-pane -R 2

      bind m run "old=$(tmux show -gv mouse) && new=$( [ "$old" = "on" ] && echo "off" || echo "on" ); tmux set -g mouse $new;"


      bind -T copy-mode-vi v send -X begin-selection
      bind -T copy-mode-vi C-v send -X rectangle-toggle
      bind -T copy-mode-vi y send -X copy-selection-and-cancel
      bind -T copy-mode-vi Escape send -X cancel

      bind b set-option -g status
    '';
  };
}