Use Latest Haskell.nix

Author: hamishmack

cabal.project

@@ -16,6 +16,8 @@ index-state:
   , hackage.haskell.org 2025-06-03T08:07:10Z
   , cardano-haskell-packages 2025-06-03T08:30:50Z
 
+constraints: terminfo source
+
 packages:
   cardano-node
   cardano-node-capi
@@ -32,8 +34,6 @@ packages:
   trace-resources
   trace-forward
 
-extra-packages: Cabal
-
 program-options
   ghc-options: -Werror