Compile hoogle with GHC version from the shell (#2227)

Author: hamishmack

builder/default.nix

@@ -64,13 +64,7 @@ let
       then pkgs.path
       else pkgs.haskell-nix.sources.nixpkgs-2205;
     nixpkgsHoogle = import (nixpkgs + /pkgs/development/haskell-modules/hoogle.nix);
-  in { packages ? [], hoogle ? pkgs.buildPackages.haskell-nix.tool "ghc928" "hoogle" {
-        inherit evalPackages;
-        version = "5.0.18.3";
-        # index-state = pkgs.haskell-nix.internalHackageIndexState;
-        index-state = "2023-06-05T00:00:00Z";
-      }
-    }:
+  in { packages ? [], hoogle }:
     let
       haskellPackages = {
         # For musl we can use haddock from the buildGHC

builder/shell-for.nix

@@ -142,21 +142,17 @@ let
       pname = p.identifier.name;
       haddockDir = p.haddockDir;
     };
-  in hoogleLocal ({
+  in hoogleLocal {
     packages = map docPackage (haskellLib.flatLibDepends component);
 
-    # Need to add hoogle to hsPkgs.
-    # inherit (hsPkgs) hoogle;
-  } // (
-    lib.optionalAttrs (args ? tools && args.tools ? hoogle) {
-      hoogle = pkgsBuildBuild.haskell-nix.hackage-tool (
-        haskellLib.versionOrModToMods args.tools.hoogle ++ [{
+    hoogle = pkgsBuildBuild.haskell-nix.hackage-tool (
+        lib.optionals (args ? tools && args.tools ? hoogle) (haskellLib.versionOrModToMods args.tools.hoogle)
+      ++ [{
           name = "hoogle";
           compiler-nix-name = compiler.nix-name;
           inherit evalPackages;
         }]);
-    }
-  ));
+    };
 
   mkDrvArgs = builtins.removeAttrs args ["packages" "components" "additional" "withHoogle" "tools"];
 in