Fix for GHC HEAD

Author: hamishmack

ci.nix

@@ -126,7 +126,12 @@ dimension "Nixpkgs version" nixpkgsVersions (nixpkgsName: pinnedNixpkgsSrc:
         } // pkgs.lib.optionalAttrs runTests {
           inherit (build) tests tools maintainer-scripts maintainer-script-cache;
         } // pkgs.lib.optionalAttrs (ifdLevel >= 3) rec {
-          hello = (pkgs.haskell-nix.hackage-package { name = "hello"; version = "1.0.0.2"; inherit evalPackages compiler-nix-name; }).getComponent "exe:hello";
+          hello = (pkgs.haskell-nix.hackage-package ({ name = "hello"; version = "1.0.0.2"; inherit evalPackages compiler-nix-name; }
+            // lib.optionalAttrs (builtins.compareVersions pkgs.buildPackages.haskell-nix.compiler.${compiler-nix-name}.version "9.13" >= 0) {
+              shell.tools.hoogle.cabalProjectLocal = ''
+                allow-newer: *:*
+              '';
+          })).getComponent "exe:hello";
           # Make sure the default shell tools (hoogle) are built
           simple-shell = (hello.project.flake {}).devShells.default;
         });