modules/warnings: add a way to bypass module-level assertions as well

modules/warnings.nix

@@ -8,8 +8,20 @@
         list of `config.warnings` values you want to ignore, verbatim.
       '';
     };
+    sane.silencedAssertions = mkOption {
+      type = types.listOf types.str;
+      default = [];
+      description = ''
+        list of `config.assertions` values you want to ignore, keyed by `message`, interpreted as a regex.
+      '';
+    };
     warnings = mkOption {
       apply = builtins.filter (w: !(builtins.elem w config.sane.silencedWarnings));
     };
+    assertions = mkOption {
+      # N.B.: don't evaluation `<assertion>.message` before checking `<assertion>.assertion`.
+      # valid assertions are (defacto) allowed to have non-evaluatable messages.
+      apply = builtins.filter (a: !(builtins.any (s: !a.assertion && builtins.match s a.message != null) config.sane.silencedAssertions));
+    };
   };
 }