treewide: mark things that have to be done

lenovo/thinkpad/t410/default.nix

@@ -8,6 +8,8 @@
   ];
 
   boot = {
+    # TODO: this configuration seems to be very aggressive.
+    # Ask @peti if it's stable or not.
     kernelParams = [
       "drm.debug=0"
       "drm.vblankoffdelay=1"

lenovo/thinkpad/t440p/default.nix

@@ -10,6 +10,7 @@
     extraModprobeConfig = lib.mkDefault ''
       options bbswitch use_acpi_to_detect_card_state=1
     '';
+    # TODO: probably enable tcsd? Is this line necessary?
     kernelModules = [ "tpm-rng" ];
   };
 }

lenovo/thinkpad/x220/default.nix

@@ -4,7 +4,7 @@
   imports = [
     ../.
     ../../../common/cpu/intel
-    ../../../common/pc/laptop/hdd
+    ../../../common/pc/laptop/hdd # TODO: reverse compat
     ../tp-smapi.nix
   ];
 }