add some vscode plugins

flake.nix

@@ -203,7 +203,9 @@
           age
           sops
           ssh-to-age
+          nixfmt-rfc-style
         ];
       };
+    formatter.x86_64-linux = (pkgsFor "x86_64-linux").nixfmt-rfc-style;
   };
 }

programs/editors/vscode/default.nix

@@ -1,4 +1,4 @@
-{vscode-server, ...}: {
+{vscode-server, pkgs, ...}: {
   imports = [
     "${vscode-server}/modules/vscode-server/home.nix"
   ];
@@ -7,6 +7,17 @@
     enableExtensionUpdateCheck = false;
     enableUpdateCheck = false;
     mutableExtensionsDir = false;
+    extensions = with pkgs.vscode-extensions; [
+      jnoortheen.nix-ide
+      mkhl.direnv
+      pkief.material-icon-theme
+    ];
+    userSettings = {
+      "nix.enableLanguageServer" = true;
+      "nix.formatterPath" = "${pkgs.nixfmt-rfc-style}/bin/nixfmt";
+      "nix.serverPath" = "${pkgs.nil}/bin/nil";
+      "workbench.iconTheme" = "material-icon-theme";
+    };
   };
   services.vscode-server.enable = true;
 }