add ssh-agent

make git commit signing add key

set sudo timout to 1m

modules/misc.nix

@@ -47,6 +47,14 @@ _:
       };
     };
 
+    programs.ssh = {
+      startAgent = true;
+      agentTimeout = "1m";
+      extraConfig = ''
+        AddKeysToAgent yes
+      '';
+    };
+
     i18n.defaultLocale = "en_US.UTF-8";
     #time settings
 

modules/shell.nix

@@ -49,6 +49,7 @@
     enable = true;
     execWheelOnly = true;
     extraConfig = ''
+      Defaults timestamp_timeout=1
       Defaults env_keep += "EDITOR VISUAL PAGER SYSTEMD_PAGERSECURE MANPAGER"
       Defaults lecture = never
     '';