diff --git a/home-manager/software/emacs/emacs.d/lib/vterm.el b/home-manager/software/emacs/emacs.d/lib/vterm.el
index 6ebb6ce..5e91fb5 100644
--- a/home-manager/software/emacs/emacs.d/lib/vterm.el
+++ b/home-manager/software/emacs/emacs.d/lib/vterm.el
@@ -9,4 +9,4 @@
 (use-package multi-vterm
   :ensure t
   :config
-  (global-set-key (kbd "M-S RET") 'multi-vterm))
+  (global-set-key (kbd "M-S-RET") 'multi-vterm))
diff --git a/lib/mk_computer.nix b/lib/mk_computer.nix
index 577b26e..98ec229 100644
--- a/lib/mk_computer.nix
+++ b/lib/mk_computer.nix
@@ -2,7 +2,7 @@
 let
   overlay-unstable = final: prev: {
     unstable = import inputs.nixpkgs-unstable {
-      system = system;
+      inherit system;
       config.allowUnfree = true;
     };
   };
diff --git a/lib/mk_raspi.nix b/lib/mk_raspi.nix
index de6956e..a7229a7 100644
--- a/lib/mk_raspi.nix
+++ b/lib/mk_raspi.nix
@@ -1,10 +1,21 @@
 { custom, hostname, inputs, system ? "aarch64-linux", home-module ? "headless" }:
 let
+  overlay-unstable = final: prev: {
+    unstable = import inputs.nixpkgs-unstable {
+      inherit system;
+      config.allowUnfree = true;
+    };
+  };
+
   pkgs = import inputs.nixpkgs {
     inherit system;
     config = {
       allowUnfree = true;
     };
+    overlays = [
+      overlay-unstable
+      inputs.nix-alien.overlay
+    ];
   };
 in
 inputs.nixpkgs.lib.nixosSystem {