Use Nixos modules for home manager configurations

home/allegro.nix

@@ -1,4 +1,8 @@
 { config, lib, pkgs, ... }: {
+  nix.package = pkgs.nixVersions.latest;
+  home.homeDirectory = "/home/${config.home.username}";
+  nixpkgs.config = { allowUnfree = true; };
+
   programs.fish = {
     loginShellInit = ''
       source ${pkgs.nix}/etc/profile.d/nix.fish

home/base.nix

@@ -1,13 +1,10 @@
-{ inputs, config, lib, pkgs, pkgs-unstable, ... }:
+{ system, inputs, config, lib, pkgs, ... }:
 {
 
   imports = [
     ./fish.nix
   ];
 
-  nix.package = pkgs.nixVersions.latest;
-  home.homeDirectory = "/home/${config.home.username}";
-
   home.stateVersion = "23.05"; # Please read the comment before changing.
 
   home.packages = with pkgs; [
@@ -92,7 +89,7 @@
     enable = true;
     viAlias = true;
     defaultEditor = true;
-    package = pkgs-unstable.neovim-unwrapped;
+    package = inputs.unstable.legacyPackages.${pkgs.stdenv.hostPlatform.system}.neovim-unwrapped;
     extraPackages = with pkgs; [
       gcc
     ];

home/gaming.nix

@@ -1,5 +1,4 @@
 { lib, config, pkgs, ... }: {
-nixpkgs.config = { allowUnfree = true; };
 
   home.packages = with pkgs; [
     lutris

home/gui-software.nix

@@ -1,4 +1,4 @@
-{ lib, config, pkgs, pkgs-unstable, ... }:
+{ lib, config, pkgs, ... }:
 {
   imports = [
     ./base.nix

home/ui.nix

@@ -21,7 +21,7 @@ in
   config = {
 
     home.packages = with pkgs; [
-      inputs.st-flexipatch.packages.${system}.st
+      inputs.st-flexipatch.packages.${pkgs.stdenv.hostPlatform.system}.st
 
       gentium
       nerd-fonts.noto
@@ -54,11 +54,6 @@ in
       })
     ];
 
-    nixpkgs.config.allowUnfreePredicate = pkg:
-      builtins.elem (lib.getName pkg) [
-        "joypixels"
-      ];
-    nixpkgs.config.joypixels.acceptLicense = true;
 
     home.file = {
       ".config/kitty/light.conf".source = dotfiles/kitty/light.conf;