add tmux

hosts/sakotop/configuration.nix

@@ -72,6 +72,7 @@
         optimize.enable = true;
       };
       zsh.enable = true;
+      tmux.enable = true;
       newsboat.enable = true;
       ranger.enable = true;
     };

modules/shell/default.nix

@@ -2,6 +2,7 @@
   imports = [
     ./nix
     ./zsh
+    ./tmux
     ./newsboat
     ./ranger
   ];

modules/shell/tmux/default.nix

@@ -0,0 +1,16 @@
+{ outputs, options, config, lib, pkgs, ...}:
+with lib;
+let
+  cfg = config.modules.shell.tmux;
+in
+{
+  options.modules.shell.tmux = {
+    enable = mkEnableOption false;
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      tmux
+    ];
+  };
+}