git, gpg and ssh configs

hosts/nixos-vm/default.nix

@@ -84,10 +84,9 @@
   # Some programs need SUID wrappers, can be configured further or are
   # started in user sessions.
   # programs.mtr.enable = true;
-  # programs.gnupg.agent = {
-  #   enable = true;
-  #   enableSSHSupport = true;
-  # };
+  programs.gnupg.agent = {
+    enable = true;
+  };
 
   # List services that you want to enable: