From 46cd32c557128cea69ff9a2d7c9efe425d0063a0 Mon Sep 17 00:00:00 2001
From: Griffin Smith <root@gws.fyi>
Date: Mon, 4 May 2020 13:12:54 -0400
Subject: [PATCH] linux-ck

---
 system/modules/common.nix |  1 +
 system/modules/kernel.nix | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 system/modules/kernel.nix

diff --git a/system/modules/common.nix b/system/modules/common.nix
index feb8b92b0..8d2902eaa 100644
--- a/system/modules/common.nix
+++ b/system/modules/common.nix
@@ -7,6 +7,7 @@
       ./emacs.nix
       ./sound.nix
       ./urbint.nix
+      ./kernel.nix
     ];
 
   boot.loader.systemd-boot.enable = true;
diff --git a/system/modules/kernel.nix b/system/modules/kernel.nix
new file mode 100644
index 000000000..92aa6955a
--- /dev/null
+++ b/system/modules/kernel.nix
@@ -0,0 +1,28 @@
+{ config, lib, pkgs, ... }:
+with lib.versions;
+let
+  inherit (pkgs) runCommand;
+  kernelRelease = config.linuxPackages.kernel.version or pkgs.linux.version;
+  mj = major kernelRelease;
+  mm = majorMinor kernelRelease;
+  linux-ck = runCommand "linux-ck-combined.patch" {} ''
+    ${pkgs.xz}/bin/unxz -kfdc ${builtins.fetchurl {
+      # http://ck.kolivas.org/patches/5.0/5.4/5.4-ck1/patch-5.4-ck1.xz
+      url = "http://ck.kolivas.org/patches/${mj}.0/${mm}/${mm}-ck1/patch-${mm}-ck1.xz";
+      sha256 = "0p2ccwlsmq0587x6cnbrk4h2bwpl9342bmhsbyi1a87cs2jfwigl";
+    }} > $out
+  '';
+in
+{
+  boot.kernelPackages = pkgs.linuxPackages.extend (self: super: {
+    kernel = super.kernel.override {
+      kernelPatches = super.kernel.kernelPatches ++ [{
+        name = "linux-ck";
+        patch = linux-ck;
+      }];
+      argsOverride = {
+        modDirVersion = super.kernel.modDirVersion + "-ck1";
+      };
+    };
+  });
+}