Merge pull request #70157 from teto/lib_kernel

Add lib.kernel

lib/default.nix

@@ -56,6 +56,9 @@ let
     # back-compat aliases
     platforms = systems.doubles;
 
+    # linux kernel configuration
+    kernel = callLibs ./kernel.nix;
+
     inherit (builtins) add addErrorContext attrNames concatLists
       deepSeq elem elemAt filter genericClosure genList getAttr
       hasAttr head isAttrs isBool isInt isList isString length

lib/kernel.nix

@@ -1,12 +1,7 @@
-{ lib, version }:
+{ lib }:
 
 with lib;
 {
-  # Common patterns/legacy
-  whenAtLeast = ver: mkIf (versionAtLeast version ver);
-  whenOlder   = ver: mkIf (versionOlder version ver);
-  # range is (inclusive, exclusive)
-  whenBetween = verLow: verHigh: mkIf (versionAtLeast version verLow && versionOlder version verHigh);
 
 
   # Keeping these around in case we decide to change this horrible implementation :)
@@ -18,4 +13,14 @@ with lib;
   module   = { tristate    = "m"; };
   freeform = x: { freeform = x; };
 
+  /*
+    Common patterns/legacy used in common-config/hardened-config.nix
+   */
+  whenHelpers = version: {
+    whenAtLeast = ver: mkIf (versionAtLeast version ver);
+    whenOlder   = ver: mkIf (versionOlder version ver);
+    # range is (inclusive, exclusive)
+    whenBetween = verLow: verHigh: mkIf (versionAtLeast version verLow && versionOlder version verHigh);
+  };
+
 }

pkgs/os-specific/linux/kernel/common-config.nix

@@ -16,11 +16,12 @@
 }:
 
 with stdenv.lib;
-
+with stdenv.lib.kernel;
-  with import ../../../../lib/kernel.nix { inherit (stdenv) lib; inherit version; };
+with (stdenv.lib.kernel.whenHelpers version);
 
 let
 
+
   # configuration items have to be part of a subattrs
   flattenKConf =  nested: mapAttrs (_: head) (zipAttrs (attrValues nested));
 

pkgs/os-specific/linux/kernel/hardened-config.nix

@@ -11,7 +11,8 @@
 { stdenv, version }:
 
 with stdenv.lib;
-with import ../../../../lib/kernel.nix { inherit (stdenv) lib; inherit version; };
+with stdenv.lib.kernel;
+with (stdenv.lib.kernel.whenHelpers version);
 
 assert (versionAtLeast version "4.9");
 

pkgs/os-specific/linux/kernel/mptcp-config.nix

@@ -1,5 +1,5 @@
 { stdenv }:
-with import ../../../../lib/kernel.nix { inherit (stdenv) lib; version = null; };
+with stdenv.lib.kernel;
 {
     # DRM_AMDGPU = yes;