separate out programs and services

system.rico/default.nix

@@ -2,6 +2,8 @@
 
   imports = [
     ./hardware
+    ./programs
+    ./services
   ];
 
   networking.hostName = "Rico2";
@@ -23,9 +25,6 @@
     supportedLocales = [ "en_US.UTF-8/UTF-8" ];
   };
 
-  programs.zsh.enable = true;
-  services.openssh.enable = true;
-
   time.timeZone = "Asia/Kolkata";
   system.stateVersion = "23.05";
 }

system.rico/programs/default.nix

@@ -0,0 +1,6 @@
+{ ... }: {
+  programs = {
+    zsh.enable = true;
+  };
+  environment.pathsToLink = [ "/share/zsh" ];
+}

system.rico/services/default.nix

@@ -0,0 +1,3 @@
+{ ... }: {
+  services.openssh.enable = true;
+}