Framework 12 fixes + emacs update

nixos/hardware/framework12/default.nix

@@ -0,0 +1,30 @@
+{
+  pkgs,
+  lib,
+  inputs,
+  ...
+}: {
+  imports = [
+    inputs.nixos-hardware.nixosModules.framework-12-13th-gen-intel
+  ];
+  # Ensure that the `pinctrl_tigerlake` kernel module is loaded before `soc_button_array`.
+  # This is required for correcly switching to tablet mode when the display is folded back.
+  boot.extraModprobeConfig = ''
+    softdep soc_button_array pre: pinctrl_tigerlake
+  '';
+  # Patch the `udev` rules shipping with `iio-sensor-proxy` according to:
+  # https://github.com/FrameworkComputer/linux-docs/blob/main/framework12/Ubuntu-25-04-accel-ubuntu25.04.md
+  nixpkgs.overlays = [
+    (final: prev: {
+      iio-sensor-proxy = prev.iio-sensor-proxy.overrideAttrs (old: {
+        postInstall = ''
+          ${old.postInstall or ""}
+          sed -i 's/.*iio-buffer-accel/#&/' $out/lib/udev/rules.d/80-iio-sensor-proxy.rules
+        '';
+      });
+    })
+  ];
+  environment.systemPackages = [
+    pkgs.frameworkTool
+  ];
+}