refactor

mod/common/boot.nix

@@ -0,0 +1,20 @@
+{ pkgs, ... }:
+{
+  boot = {
+    loader = {
+      efi.canTouchEfiVariables = true;
+      grub = {
+        enable = true;
+        efiSupport = true;
+        device = "nodev";
+      };
+    };
+
+    # otherwise /tmp is on disk. This *may* be problematic as nix
+    # builds in /tmp but I think my swap is large enough...
+    tmp.useTmpfs = true;
+
+    kernelPackages = pkgs.linuxPackages_6_13;
+    kernel.sysctl."kernel.sysrq" = 1;
+  };
+}