linux_lqx: init at 5.9.15

Same source as linux_zen but with a release schedule that's not quite as
bleeding edge. For example, it's currenly on the newest 5.9 release while
linux_zen is already on 5.10 and won't release future 5.9 fixes.

Originally meant for debianish Distros.

pkgs/os-specific/linux/kernel/linux-lqx.nix

@@ -0,0 +1,24 @@
+{ stdenv, fetchFromGitHub, buildLinux, ... } @ args:
+
+let
+  version = "5.9.15";
+in
+
+buildLinux (args // {
+  modDirVersion = "${version}-lqx1";
+  inherit version;
+  isZen = true;
+
+  src = fetchFromGitHub {
+    owner = "zen-kernel";
+    repo = "zen-kernel";
+    rev = "v${version}-lqx1";
+    sha256 = "1srkybhgm3rsmhs4m8ipv1zi4y1dxnlicgh0x9v2g4myn58lin57";
+  };
+
+  extraMeta = {
+    branch = "5.9/master";
+    maintainers = with stdenv.lib.maintainers; [ atemu ];
+  };
+
+} // (args.argsOverride or {}))

pkgs/top-level/all-packages.nix

@@ -18448,6 +18448,14 @@ in
     ];
   };
 
+  linux_lqx = callPackage ../os-specific/linux/kernel/linux-lqx.nix {
+    kernelPatches = [
+      kernelPatches.bridge_stp_helper
+      kernelPatches.request_key_helper
+      kernelPatches.export_kernel_fpu_functions."5.3"
+    ];
+  };
+
   /* Linux kernel modules are inherently tied to a specific kernel.  So
      rather than provide specific instances of those packages for a
      specific kernel, we have a function that builds those packages
@@ -18762,6 +18770,7 @@ in
 
   # zen-kernel
   linuxPackages_zen = recurseIntoAttrs (linuxPackagesFor pkgs.linux_zen);
+  linuxPackages_lqx = recurseIntoAttrs (linuxPackagesFor pkgs.linux_lqx);
 
   # A function to build a manually-configured kernel
   linuxManualConfig = makeOverridable (callPackage ../os-specific/linux/kernel/manual-config.nix {});