Fix vty build

scripts/build-all.nix

@@ -60,7 +60,7 @@ let
   in map import inputs;
 
   # All Haskell packages built with the HEAD compiler.
-  haskellPackages = nixpkgs.haskellPackages;
+  haskellPackages = nixpkgs.haskellPackages.extend(sel: sup: {terminfo = null;});
 
   # The packages which we are here to test
   testedPackages = with nixpkgs.haskell.lib; with haskellPackages; {