diff --git a/nt/primitives/CHECK_LIST.md b/nt/CHECK_LIST.md
similarity index 95%
rename from nt/primitives/CHECK_LIST.md
rename to nt/CHECK_LIST.md
index e95e2a5..7947333 100644
--- a/nt/primitives/CHECK_LIST.md
+++ b/nt/CHECK_LIST.md
@@ -1,3 +1,4 @@
+- [ ] mix should do a deeply nested merge, not a surface level merge
 - [ ] implement isomorphisms (especially from primitives to NixTypes)