treewide: remove obsolete kernel version checks

We no longer support any Linux kernel older than 4.9.

nixos/modules/hardware/video/webcam/facetimehd.nix

@@ -16,11 +16,6 @@ in
 
   config = mkIf cfg.enable {
 
-    assertions = singleton {
-      assertion = versionAtLeast kernelPackages.kernel.version "3.19";
-      message = "facetimehd is not supported for kernels older than 3.19";
-    };
-
     boot.kernelModules = [ "facetimehd" ];
 
     boot.blacklistedKernelModules = [ "bdc_pci" ];

pkgs/os-specific/linux/anbox/kmod.nix

@@ -36,7 +36,7 @@ stdenv.mkDerivation {
     homepage = "https://github.com/anbox/anbox-modules";
     license = licenses.gpl2Only;
     platforms = platforms.linux;
-    broken = kernel.kernelOlder "4.4" || kernel.kernelAtLeast "5.5";
+    broken = kernel.kernelAtLeast "5.5";
     maintainers = with maintainers; [ edwtjo ];
   };
 }

pkgs/os-specific/linux/digimend/default.nix

@@ -1,7 +1,5 @@
 { lib, stdenv, fetchFromGitHub, fetchpatch, kernel }:
 
-assert lib.versionAtLeast kernel.version "3.5";
-
 stdenv.mkDerivation rec {
   pname = "digimend";
   version = "unstable-2019-06-18";

pkgs/os-specific/linux/ena/default.nix

@@ -42,6 +42,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2Only;
     maintainers = [ maintainers.eelco ];
     platforms = platforms.linux;
-    broken = kernel.kernelOlder "4.5" || kernel.kernelAtLeast "5.15";
+    broken = kernel.kernelAtLeast "5.15";
   };
 }

pkgs/os-specific/linux/facetimehd/default.nix

@@ -1,9 +1,9 @@
 { stdenv, lib, fetchFromGitHub, kernel }:
 
-# facetimehd is not supported for kernels older than 3.19";
-assert lib.versionAtLeast kernel.version "3.19";
+stdenv.mkDerivation rec {
+  name = "facetimehd-${version}-${kernel.version}";
+  version = "unstable-2020-04-16";
 
-let
   # Note: When updating this revision:
   # 1. Also update pkgs/os-specific/linux/firmware/facetimehd-firmware/
   # 2. Test the module and firmware change via:
@@ -14,29 +14,11 @@ let
   #    e. see if the module loads back (apps using the camera won't
   #       recover and will have to be restarted) and the camera
   #       still works.
-  srcParams = if (lib.versionAtLeast kernel.version "4.8") then
-    { # Use mainline branch
-      version = "unstable-2020-04-16";
-      rev = "82626d4892eeb9eb704538bf0dc49a00725ff451";
-      sha256 = "118z6vjvhhcwvs4n3sgwwdagys9w718b8nkh6l9ic93732vv7cqx";
-    }
-  else
-    { # Use master branch (broken on 4.8)
-      version = "unstable-2016-05-02";
-      rev = "5a7083bd98b38ef3bd223f7ee531d58f4fb0fe7c";
-      sha256 = "0d455kajvn5xav9iilqy7s1qvsy4yb8vzjjxx7bvcgp7aj9ljvdp";
-    }
-  ;
-in
-
-stdenv.mkDerivation rec {
-  name = "facetimehd-${version}-${kernel.version}";
-  version = srcParams.version;
-
   src = fetchFromGitHub {
     owner = "patjak";
     repo = "bcwc_pcie";
-    inherit (srcParams) rev sha256;
+    rev = "82626d4892eeb9eb704538bf0dc49a00725ff451";
+    sha256 = "118z6vjvhhcwvs4n3sgwwdagys9w718b8nkh6l9ic93732vv7cqx";
   };
 
   preConfigure = ''

pkgs/os-specific/linux/kernel/gpio-utils.nix

@@ -2,8 +2,6 @@
 
 with lib;
 
-assert versionAtLeast linux.version "4.6";
-
 stdenv.mkDerivation {
   pname = "gpio-utils";
   version = linux.version;

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

@@ -9,8 +9,6 @@
 
 with lib;
 
-assert versionAtLeast kernel.version "3.12";
-
 stdenv.mkDerivation {
   pname = "perf-linux";
   version = kernel.version;

pkgs/os-specific/linux/ply/default.nix

@@ -35,6 +35,5 @@ stdenv.mkDerivation rec {
     homepage = "https://wkz.github.io/ply/";
     license = [ licenses.gpl2Only ];
     maintainers = with maintainers; [ mic92 mbbx6spp ];
-    broken = lib.versionOlder kernel.version "4.0";
   };
 }

pkgs/os-specific/linux/sch_cake/default.nix

@@ -1,7 +1,5 @@
 { stdenv, lib, fetchFromGitHub, kernel }:
 
-assert lib.versionAtLeast kernel.version "4.4";
-
 stdenv.mkDerivation {
   pname = "sch_cake";
   version = "unstable-2017-07-16";

pkgs/os-specific/linux/wireguard/default.nix

@@ -1,7 +1,5 @@
 { lib, stdenv, fetchzip, kernel, perl, wireguard-tools, bc }:
 
-# module requires Linux >= 3.10 https://www.wireguard.io/install/#kernel-requirements
-assert lib.versionAtLeast kernel.version "3.10";
 # wireguard upstreamed since 5.6 https://lists.zx2c4.com/pipermail/wireguard/2019-December/004704.html
 assert lib.versionOlder kernel.version "5.6";
 

pkgs/os-specific/linux/zfs/default.nix

@@ -216,7 +216,7 @@ in {
   # to be adapted
   zfsStable = common {
     # check the release notes for compatible kernels
-    kernelCompatible = kernel.kernelAtLeast "3.10" && kernel.kernelOlder "5.18";
+    kernelCompatible = kernel.kernelOlder "5.18";
     latestCompatibleLinuxPackages = linuxPackages_5_17;
 
     # this package should point to the latest release.
@@ -227,7 +227,7 @@ in {
 
   zfsUnstable = common {
     # check the release notes for compatible kernels
-    kernelCompatible = kernel.kernelAtLeast "3.10" && kernel.kernelOlder "5.18";
+    kernelCompatible = kernel.kernelOlder "5.18";
     latestCompatibleLinuxPackages = linuxPackages_5_17;
 
     # this package should point to a version / git revision compatible with the latest kernel release

pkgs/servers/openafs/1.8/module.nix

@@ -70,6 +70,6 @@ stdenv.mkDerivation {
     license = licenses.ipl10;
     platforms = platforms.linux;
     maintainers = with maintainers; [ maggesi spacefrogg ];
-    broken = kernel.kernelOlder "3.18" || kernel.kernelAtLeast "5.17" || kernel.isHardened;
+    broken = kernel.kernelAtLeast "5.17" || kernel.isHardened;
   };
 }

pkgs/servers/openafs/1.9/module.nix

@@ -59,6 +59,6 @@ in stdenv.mkDerivation {
     license = licenses.ipl10;
     platforms = platforms.linux;
     maintainers = [ maintainers.maggesi maintainers.spacefrogg ];
-    broken = versionOlder kernel.version "3.18" || kernel.kernelAtLeast "5.15" || kernel.isHardened;
+    broken = kernel.kernelAtLeast "5.15" || kernel.isHardened;
   };
 }

pkgs/top-level/linux-kernels.nix

@@ -404,7 +404,7 @@ in {
 
     oci-seccomp-bpf-hook = if lib.versionAtLeast kernel.version "5.4" then callPackage ../os-specific/linux/oci-seccomp-bpf-hook { } else null;
 
-    perf = if lib.versionAtLeast kernel.version "3.12" then callPackage ../os-specific/linux/kernel/perf.nix { } else null;
+    perf = callPackage ../os-specific/linux/kernel/perf.nix { };
 
     phc-intel = if lib.versionAtLeast kernel.version "4.10" then callPackage ../os-specific/linux/phc-intel { } else null;