lib.kernel: scoped whenXXX helpers

whenAtLeast/whenBetween are made available in lib/kernel.nix but are now scoped under whenXXX.
2019-09-19 20:12:35 +09:00
parent afa0e02d64
commit a4fe469d39
3 changed files with 13 additions and 5 deletions
--- a/lib/kernel.nix
+++ b/lib/kernel.nix
@@ -13,4 +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);
+  };
+
 }