refactor(home): adjust nixpkgs config

home/base.nix

@@ -0,0 +1,5 @@
+_:
+
+{
+  imports = [ ./nixpkgs.nix ];
+}

home/felschr-server.nix

@@ -7,6 +7,7 @@
 
 {
   imports = [
+    ./base.nix
     ./shell
     ./editors/lsp.nix
     ./editors/helix

home/felschr-work.nix

@@ -3,6 +3,7 @@
 with pkgs;
 {
   imports = [
+    ./base.nix
     ./shell
     ./tailscale.nix
     ./editors

home/felschr.nix

@@ -2,6 +2,7 @@
 
 {
   imports = [
+    ./base.nix
     ./shell
     ./tailscale.nix
     ./editors

home/flake-module.nix

@@ -16,15 +16,12 @@ let
       pkgs = self.pkgsFor system;
       extraSpecialArgs = { inherit inputs; };
 
-      modules =
-        (with self.homeModules; [ nixpkgs ])
-        ++ [
-          {
-            home.username = user;
-            home.homeDirectory = "/home/${user}";
-          }
-        ]
-        ++ modules;
+      modules = [
+        {
+          home.username = user;
+          home.homeDirectory = "/home/${user}";
+        }
+      ] ++ modules;
     };
 in
 {
@@ -32,7 +29,6 @@ in
 
   flake = {
     homeModules = {
-      nixpkgs = import ./modules/nixpkgs.nix;
       git = import ./modules/git.nix;
       firefox = import ./modules/firefox/firefox.nix;
       tor-browser = import ./modules/firefox/tor-browser.nix;