Merge pull request #97023 from Infinisil/module-assertions

Module-builtin assertions, disabling assertions and submodule assertions

nixos/modules/misc/assertions.nix

@@ -1,4 +1,4 @@
-{ lib, ... }:
+{ lib, config, ... }:
 
 with lib;
 
@@ -30,5 +30,18 @@ with lib;
     };
 
   };
+
+  config._module.checks = lib.listToAttrs (lib.imap1 (n: value:
+    let
+      name = "_${toString n}";
+      isWarning = lib.isString value;
+      result = {
+        check = if isWarning then false else value.assertion;
+        type = if isWarning then "warning" else "error";
+        message = if isWarning then value else value.message;
+      };
+    in nameValuePair name result
+  ) (config.assertions ++ config.warnings));
+
   # impl of assertions is in <nixpkgs/nixos/modules/system/activation/top-level.nix>
 }