Fix hls test

Author: hamishmack

test/haskell-language-server/cabal.nix

@@ -4,6 +4,7 @@ let
     inherit compiler-nix-name evalPackages;
     name = "haskell-language-server";
     src = haskell-nix.sources."hls-2.9";
+    configureArgs = "--disable-benchmarks --disable-tests"; # This makes cabalProject' more like the `tool` function
   };
 in recurseIntoAttrs {
   ifdInputs = {