add ssh for server, add vscodium for pc, refactor hostnames

modules/desktop/editors/vscodium.nix

@@ -0,0 +1,18 @@
+{ config, options, lib, pkgs, ... }:
+let
+  inherit (lib.meta) getExe;
+  inherit (lib.modules) mkIf;
+
+  cfg = config.modules.desktop.editors.vscodium;
+in
+{
+  options.modules.desktop.editors.vscodium = let
+    inherit (lib.options) mkEnableOption;
+  in { enable = mkEnableOption "vscodium"; };
+
+  config = mkIf cfg.enable {
+    user.packages = attrValues {
+      inherit (pkgs) vscodium;
+    };
+  };
+}

modules/networking/ssh.nix

@@ -0,0 +1,27 @@
+{ config, options, lib, pkgs, ... }:
+let
+  inherit (lib.modules) mkIf;
+in
+{
+  options.modules.networking.ssh = let
+    inherit (lib.options) mkEnableOption;
+  in {
+    enable = mkEnableOption "enable ssh";
+  };
+
+  config = mkIf config.modules.networking.ssh.enable {
+    services.openssh = {
+      enable = true;
+      openFirewall = true;
+      ports = [ 22 ];
+      settings = {
+        PassswordAuthentication = true;
+        AllowUsers = [ "chris", "root" ];
+        UseDns = true;
+        UsePAM = true;
+        PermitRootLogin = "prohibit-password";
+        PermitEmptyPasswords = "no";
+      };
+    };
+  };
+}

modules/system/networking.nix

@@ -1,7 +1,3 @@
 { pkgs, ... }:
 {
-  networking = {
-    hostName = "chris-pc";
-    networkmanager.enable = true;
-  };
 }