diff --git a/aoc2024/Day21.newt.golden b/aoc2024/Day21.newt.golden
index 08cb442..8bbb18a 100644
--- a/aoc2024/Day21.newt.golden
+++ b/aoc2024/Day21.newt.golden
@@ -1,8 +1,8 @@
 aoc2024/day21/eg.txt
-[(0, (3, 1)), (1, (2, 0)), (2, (2, 1)), (3, (2, 2)), (4, (1, 0)), (5, (1, 1)), (6, (1, 2)), (7, (0, 0)), (8, (0, 1)), (9, (0, 2)), (A, (3, 2))]
+[('0', (3, 1)), ('1', (2, 0)), ('2', (2, 1)), ('3', (2, 2)), ('4', (1, 0)), ('5', (1, 1)), ('6', (1, 2)), ('7', (0, 0)), ('8', (0, 1)), ('9', (0, 2)), ('A', (3, 2))]
 part1 126384
 part2 154115708116294
 aoc2024/day21/input.txt
-[(0, (3, 1)), (1, (2, 0)), (2, (2, 1)), (3, (2, 2)), (4, (1, 0)), (5, (1, 1)), (6, (1, 2)), (7, (0, 0)), (8, (0, 1)), (9, (0, 2)), (A, (3, 2))]
+[('0', (3, 1)), ('1', (2, 0)), ('2', (2, 1)), ('3', (2, 2)), ('4', (1, 0)), ('5', (1, 1)), ('6', (1, 2)), ('7', (0, 0)), ('8', (0, 1)), ('9', (0, 2)), ('A', (3, 2))]
 part1 248108
 part2 303836969158972
diff --git a/aoc2024/Day21monad.newt.golden b/aoc2024/Day21monad.newt.golden
index 08cb442..8bbb18a 100644
--- a/aoc2024/Day21monad.newt.golden
+++ b/aoc2024/Day21monad.newt.golden
@@ -1,8 +1,8 @@
 aoc2024/day21/eg.txt
-[(0, (3, 1)), (1, (2, 0)), (2, (2, 1)), (3, (2, 2)), (4, (1, 0)), (5, (1, 1)), (6, (1, 2)), (7, (0, 0)), (8, (0, 1)), (9, (0, 2)), (A, (3, 2))]
+[('0', (3, 1)), ('1', (2, 0)), ('2', (2, 1)), ('3', (2, 2)), ('4', (1, 0)), ('5', (1, 1)), ('6', (1, 2)), ('7', (0, 0)), ('8', (0, 1)), ('9', (0, 2)), ('A', (3, 2))]
 part1 126384
 part2 154115708116294
 aoc2024/day21/input.txt
-[(0, (3, 1)), (1, (2, 0)), (2, (2, 1)), (3, (2, 2)), (4, (1, 0)), (5, (1, 1)), (6, (1, 2)), (7, (0, 0)), (8, (0, 1)), (9, (0, 2)), (A, (3, 2))]
+[('0', (3, 1)), ('1', (2, 0)), ('2', (2, 1)), ('3', (2, 2)), ('4', (1, 0)), ('5', (1, 1)), ('6', (1, 2)), ('7', (0, 0)), ('8', (0, 1)), ('9', (0, 2)), ('A', (3, 2))]
 part1 248108
 part2 303836969158972
diff --git a/aoc2024/Day23.newt b/aoc2024/Day23.newt
index a65fe9f..9def289 100644
--- a/aoc2024/Day23.newt
+++ b/aoc2024/Day23.newt
@@ -27,10 +27,6 @@ startT s = case unpack s of
   ('t' :: _) => True
   _ => False
 
-isJust : ∀ a. Maybe a → Bool
-isJust (Just x) = True
-isJust _ = False
-
 checkK3 : Graph → EdgeSet → Edge → Int
 checkK3 g es (a,b) =
   let cand = fromMaybe Nil $ snd <$> lookupMap b g
diff --git a/scripts/aoc b/scripts/aoc
index 85adbec..56a539f 100755
--- a/scripts/aoc
+++ b/scripts/aoc
@@ -1,6 +1,7 @@
 #!/bin/sh
 mkdir -p tmp
 echo "Test AoC 2024 solutions"
+# FIXME - it turns out there are some stack issues here (including length)
 NCC="bun run newt.js"
 total=0
 failed=0