feat(nix): use baseline x86 packages for desktop apps

overlays/default.nix

@@ -1,13 +1,13 @@
 { inputs, ... }:
 {
-  # When applied, the stable nixpkgs set (declared in the flake inputs) will be accessible through 'pkgs.stable'
+  # Additional package sets are accessible through `pkgs.<name>`.
   stable = final: _prev: {
     stable = import inputs.nixpkgs-stable {
       system = final.stdenv.hostPlatform.system;
       config.allowUnfree = true;
     };
   };
-  # When applied, the master nixpkgs set (declared in the flake inputs) will be accessible through 'pkgs.master'
+
   master = final: _prev: {
     master = import inputs.nixpkgs-master {
       system = final.stdenv.hostPlatform.system;
@@ -15,5 +15,14 @@
     };
   };
 
+  # Baseline x86-64 (v1) packages for prebuilt applications that should not
+  # inherit an x86-64-v3 host platform.
+  x86-v1 = final: _prev: {
+    x86-v1 = import inputs.nixpkgs {
+      system = final.stdenv.hostPlatform.system;
+      config.allowUnfree = true;
+    };
+  };
+
   patches = import ./patches;
 }

users/richie/home/gui/comms.nix

@@ -1,6 +1,6 @@
 { pkgs, ... }:
 {
-  home.packages = with pkgs; [
+  home.packages = with pkgs.x86-v1; [
     discord-canary
     signal-desktop
     slack

users/richie/home/gui/default.nix

@@ -14,7 +14,7 @@
     gimp
     mediainfo
     obs-studio
-    obsidian
+    x86-v1.obsidian
     prismlauncher
     prusa-slicer
     qalculate-gtk

users/richie/home/gui/vscode/default.nix

@@ -13,7 +13,7 @@ in
 
   programs.vscode = {
     enable = true;
-    package = pkgs.vscode;
+    package = pkgs.x86-v1.vscode;
     mutableExtensionsDir = true;
   };
 }