shell.nix

@@ -1,10 +0,0 @@
-let
-  pkgs = import <nixpkgs> {};
-in
-pkgs.mkShell {
-  buildInputs = [
-    pkgs.haskell.compiler.ghc90
-    pkgs.cabal-install
-    pkgs.llvm_18
-  ];
-}

windows12.cabal

@@ -82,8 +82,7 @@ executable windows12
         text >= 1.2.5 && < 1.3,
         parser-combinators >= 1.3.0 && < 1.4,
         prettyprinter >= 1.5.1 && < 1.6,
-        string-conversions >= 0.4.0 && < 0.5,
-        mtl >= 2.2.2 && < 2.3,
+        string-conversions >= 0.4.0 && < 0.5
 
     -- Directories containing source files.
     hs-source-dirs:   src