diff --git a/default.nix b/default.nix
index b194d9d..4c3b284 100644
--- a/default.nix
+++ b/default.nix
@@ -47,10 +47,10 @@
     ];
     config.contentAddressedByDefault = true;
   };
-  pkgsFor = localSystem: args:
+  pkgsFor = system: args:
     import nixpkgs (args
       // {
-        inherit localSystem;
+        localSystem = localSystems.${system};
         overlays = [
           (_: _: {
             nixpkgs-unpatched = nixpkgs-unpatched';
@@ -58,7 +58,20 @@
           (import ./overlay.nix)
         ];
       });
+  keepBuilt = system: let
+    pkgs = pkgsFor system {};
+  in {
+    inherit (pkgs) nixos-rebuild;
+  };
 in {
   inherit (pkgs-unpatched) nixpkgs;
   inherit pkgsFor;
+  x86_64-linux = keepBuilt "x86_64-linux";
+  aarch64-linux = keepBuilt "aarch64-linux";
+  default = keepBuilt "default";
+  skylake = keepBuilt "skylake";
+  skylake-avx512 = keepBuilt "skylake-avx512";
+  neoverse-n1 = keepBuilt "neoverse-n1";
+  znver1 = keepBuilt "znver1";
+  znver2 = keepBuilt "znver2";
 }