From 0c16d077772d9ff816080e9b9ab79aed9f3558f4 Mon Sep 17 00:00:00 2001
From: Sergey Kazenyuk <kazenyuk@pm.me>
Date: Tue, 19 Sep 2023 02:42:41 +0300
Subject: [PATCH] Add hoogle support in flake-parts module

---
 flake-module.nix | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/flake-module.nix b/flake-module.nix
index 50a14e208..5cdd568e5 100644
--- a/flake-module.nix
+++ b/flake-module.nix
@@ -59,6 +59,14 @@ ihpFlake:
                     type = lib.types.path;
                 };
 
+                withHoogle = lib.mkOption {
+                    description = ''
+                        Enable Hoogle support. Adds `hoogle` command to PATH.
+                    '';
+                    type = lib.types.bool;
+                    default = false;
+                };
+
                 dontCheckPackages = lib.mkOption {
                     description = ''
                         List of Haskell package names whose tests are skipped during build.
@@ -166,7 +174,9 @@ ihpFlake:
                 containers = lib.mkForce {};
 
                 languages.haskell.enable = true;
-                languages.haskell.package = ghcCompiler.ghc.withPackages cfg.haskellPackages;
+                languages.haskell.package = (if cfg.withHoogle
+                                             then ghcCompiler.ghc.withHoogle
+                                             else ghcCompiler.ghc.withPackages) cfg.haskellPackages;
 
                 languages.haskell.languageServer = ghcCompiler.haskell-language-server;
                 languages.haskell.stack = null; # Stack is not used in IHP