installs tmux on servers

modules/tmux/server.nix

@@ -0,0 +1,59 @@
+{ pkgs, ... }:
+
+{
+  programs.tmux = {
+    enable = true;
+    package = pkgs.tmux;
+    baseIndex = 1;
+    clock24 = true;
+    disableConfirmationPrompt = true;
+    mouse = true;
+    newSession = true;
+    prefix = "C-a";
+    shell = "${pkgs.fish}/bin/fish";
+    terminal = "screen-256color";
+    keyMode = "vi";
+    escapeTime = 0;
+    extraConfig = ''
+      set -g status-position bottom
+      set -g status-style bg=#1d202f,fg=white
+      set -g status-left ""
+      set -g status-right "#[bg=default,fg=magenta]>> #S << #[bg=default,fg=white]#{hostname_short} "
+      set-window-option -g window-status-style 'fg=magenta,bg=#1d202f'
+      set-window-option -g window-status-format ' #I #[fg=white]#W #[fg=cyan]#F '
+      set-window-option -g window-status-current-style "fg=black,bg=magenta"
+      set-window-option -g window-status-current-format " #I #W #F "
+      set -g pane-border-style fg=#807c9f
+      set -g pane-active-border-style fg=magenta
+      set -g message-style "fg=black,bg=red,bold"
+
+      unbind %
+      bind "|" split-window -h
+      unbind '"'
+      bind - split-window -l 15 -v
+
+      bind r source-file "~/.config/tmux/tmux.conf"
+
+      bind h select-pane -L
+      bind j select-pane -D
+      bind k select-pane -U
+      bind l select-pane -R
+
+      bind -r H resize-pane -L 5
+      bind -r J resize-pane -D 5
+      bind -r K resize-pane -U 5
+      bind -r L resize-pane -R 5
+
+      bind ? list-keys -a
+
+      unbind s
+      bind s display-popup -h 50% -w 80% -E sessionizer
+
+      unbind C-x
+      bind C-x kill-session
+
+      unbind v
+      bind v choose-tree -Zw "join-pane -t '%%'"
+    '';
+  };
+}