Use named directory for Haskell source

Makes way for other languages.

cabal.project

@@ -1 +1 @@
-packages: .
+packages: haskell

haskell/Main.hs

@@ -36,10 +36,10 @@ main =
                                     . runParser (parser <* eof) fp
                                     =<< T.readFile fp
                          in
-                            withResource (parseFile $ "inputs/" <> t <> "/" <> pt) mempty \input ->
+                            withResource (parseFile $ "../inputs/" <> t <> "/" <> pt) mempty \input ->
                                 testGroup pt $
                                     zip (map show [1 :: Int ..]) parts <&> \(n, pp) ->
-                                        goldenVsString n ("outputs/" <> t <> "/" <> pt <> "/" <> n) $
+                                        goldenVsString n ("../outputs/" <> t <> "/" <> pt <> "/" <> n) $
                                             BL.fromStrict . encodeUtf8 . pp <$> input
 
 data Puzzle = forall input. Puzzle

haskell/aoc.cabal

@@ -7,7 +7,7 @@ maintainer: georgefsthomas@gmail.com
 
 executable aoc
     main-is: Main.hs
-    hs-source-dirs: app
+    hs-source-dirs: .
     default-language: GHC2024
     default-extensions:
         BlockArguments