modules/nixos: add armv7l kernel personality patch

modules/nixos/common/armv7l.nix

@@ -0,0 +1,24 @@
+{ lib, pkgs, ... }:
+# https://github.com/NixOS/aarch64-build-box/pull/133
+{
+  config = lib.mkIf (pkgs.stdenv.hostPlatform.system == "aarch64-linux") {
+    boot.kernelParams = [ "compat_uts_machine=armv7l" ];
+
+    boot.kernelPatches =
+      let
+        name = "compat_uts_machine";
+      in
+      [
+        {
+          inherit name;
+          patch = pkgs.fetchpatch {
+            inherit name;
+            url = "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy/patch/?id=c1da50fa6eddad313360249cadcd4905ac9f82ea";
+            hash = "sha256-357+EzMLLt7IINdH0ENE+VcDXwXJMo4qiF/Dorp2Eyw=";
+          };
+        }
+      ];
+
+    nix.settings.extra-platforms = [ "armv7l-linux" ];
+  };
+}

modules/nixos/common/default.nix

@@ -9,6 +9,7 @@
     ../../shared/known-hosts.nix
     ../../shared/nix-daemon.nix
     ./agenix.nix
+    ./armv7l.nix
     ./builder.nix
     ./security.nix
     ./sops-nix.nix