Use consistent naming convention for puzzles

haskell/Main.hs

@@ -5,8 +5,8 @@ import Data.Functor
 import Data.Text.Encoding (encodeUtf8)
 import Data.Text.IO qualified as T
 import Puzzle
-import Puzzles.Day1
-import Puzzles.Day2
+import Puzzles.Day1 qualified as Day1
+import Puzzles.Day2 qualified as Day2
 import Test.Tasty
 import Test.Tasty.Golden (goldenVsString)
 import Test.Tasty.Ingredients.ConsoleReporter
@@ -19,8 +19,8 @@ main =
         . testGroup "tests"
         $ ["examples", "real"] <&> \t ->
             testGroup t $
-                [ puzzle1
-                , puzzle2
+                [ Day1.puzzle
+                , Day2.puzzle
                 ]
                     <&> \Puzzle{number, parser, parts} ->
                         let

haskell/Puzzles/Day1.hs

@@ -1,4 +1,4 @@
-module Puzzles.Day1 (puzzle1) where
+module Puzzles.Day1 (puzzle) where
 
 import Control.Monad.State
 import Data.Bifunctor
@@ -9,8 +9,8 @@ import Text.Megaparsec hiding (Pos)
 import Text.Megaparsec.Char
 import Text.Megaparsec.Char.Lexer qualified as Lex
 
-puzzle1 :: Puzzle
-puzzle1 =
+puzzle :: Puzzle
+puzzle =
     Puzzle
         { number = 1
         , parser = flip sepEndBy newline $ (,) <$> ((char 'L' $> L) <|> (char 'R' $> R)) <*> (Inc <$> Lex.decimal)

haskell/Puzzles/Day2.hs

@@ -1,4 +1,4 @@
-module Puzzles.Day2 (puzzle2) where
+module Puzzles.Day2 (puzzle) where
 
 import Control.Monad
 import Data.Functor
@@ -10,8 +10,8 @@ import Text.Megaparsec
 import Text.Megaparsec.Char
 import Text.Megaparsec.Char.Lexer qualified as Lex
 
-puzzle2 :: Puzzle
-puzzle2 =
+puzzle :: Puzzle
+puzzle =
     Puzzle
         { number = 2
         , parser = (<* newline) $ flip sepBy (char ',') $ (,) <$> (Lex.decimal <* char '-') <*> Lex.decimal