diff --git a/nixos/modules/system/boot/kernel.nix b/nixos/modules/system/boot/kernel.nix
index ee43fe10023..baa8c602a99 100644
--- a/nixos/modules/system/boot/kernel.nix
+++ b/nixos/modules/system/boot/kernel.nix
@@ -36,6 +36,7 @@ in
 
     boot.kernelPackages = mkOption {
       default = pkgs.linuxPackages;
+      type = types.unspecified // { merge = mergeEqualOption; };
       apply = kernelPackages: kernelPackages.extend (self: super: {
         kernel = super.kernel.override {
           inherit randstructSeed;
diff --git a/pkgs/os-specific/linux/blcr/default.nix b/pkgs/os-specific/linux/blcr/default.nix
index 626e978f1f1..e018f4622b4 100644
--- a/pkgs/os-specific/linux/blcr/default.nix
+++ b/pkgs/os-specific/linux/blcr/default.nix
@@ -2,7 +2,7 @@
 
 # BLCR version 0.8.6 should works with linux kernel up to version 3.17.x
 
-assert builtins.compareVersions "3.18" kernel.version == 1;
+assert stdenv.lib.versionOlder "3.18" kernel.version;
 
 stdenv.mkDerivation {
   name = "blcr_${kernel.version}-0.8.6pre4";
diff --git a/pkgs/os-specific/linux/nvidia-x11/default.nix b/pkgs/os-specific/linux/nvidia-x11/default.nix
index 82ac359158b..2290a7e80a1 100644
--- a/pkgs/os-specific/linux/nvidia-x11/default.nix
+++ b/pkgs/os-specific/linux/nvidia-x11/default.nix
@@ -1,7 +1,11 @@
 { lib, callPackage, fetchurl, stdenv }:
 
 let
-  generic = args: callPackage (import ./generic.nix args) { };
+
+generic = args:
+if ((!lib.versionOlder args.version "391")
+    && stdenv.hostPlatform.system != "x86_64-linux") then null
+  else callPackage (import ./generic.nix args) { };
   kernel = callPackage # a hacky way of extracting parameters from callPackage
     ({ kernel, libsOnly ? false }: if libsOnly then { } else kernel) { };
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index cd19b770090..e89c5c65b62 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -15716,7 +15716,7 @@ in
 
     ati_drivers_x11 = callPackage ../os-specific/linux/ati-drivers { };
 
-    blcr = callPackage ../os-specific/linux/blcr { };
+    blcr = if stdenv.lib.versionOlder "3.18" kernel.version then callPackage ../os-specific/linux/blcr { } else null;
 
     chipsec = callPackage ../tools/security/chipsec {
       inherit kernel;
@@ -15737,7 +15737,7 @@ in
 
     hyperv-daemons = callPackage ../os-specific/linux/hyperv-daemons { };
 
-    e1000e = callPackage ../os-specific/linux/e1000e {};
+    e1000e = if stdenv.lib.versionOlder kernel.version "4.10" then  callPackage ../os-specific/linux/e1000e {} else null;
 
     ixgbevf = callPackage ../os-specific/linux/ixgbevf {};
 
@@ -15805,7 +15805,8 @@ in
 
     phc-intel = callPackage ../os-specific/linux/phc-intel { };
 
-    prl-tools = callPackage ../os-specific/linux/prl-tools { };
+    # Disable for kernels 4.15 and above due to compatibility issues
+    prl-tools = if stdenv.lib.versionOlder kernel.version "4.15" then callPackage ../os-specific/linux/prl-tools { } else null;
 
     sch_cake = callPackage ../os-specific/linux/sch_cake { };