From a15b32eaf9552dd695744cecf5841f24efa8b64d Mon Sep 17 00:00:00 2001
From: hololeap <hololeap@protonmail.com>
Date: Wed, 21 Jan 2026 14:17:12 -0700
Subject: [PATCH 1/1] Migrate to cabal-doctest

doctest pulls in the out-of-scope packages if they are installed on the
system. The best workaround is to use migrate to cabal-doctest.

Bug: https://github.com/gentoo-haskell/gentoo-haskell/issues/1231
Signed-off-by: hololeap <hololeap@protonmail.com>
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,23 @@
+{-# LANGUAGE CPP #-}
+
+module Main (main) where
+
+#ifndef MIN_VERSION_cabal_doctest
+#define MIN_VERSION_cabal_doctest(x,y,z) 0
+#endif
+
+#if MIN_VERSION_cabal_doctest(1,0,0)
+
+import Distribution.Extra.Doctest ( defaultMainWithDoctests )
+
+main :: IO ()
+main = defaultMainWithDoctests "relude-doctest"
+
+#else
+
+import Distribution.Simple
+
+main :: IO ()
+main = defaultMain
+
+#endif
--- a/relude.cabal
+++ b/relude.cabal
@@ -89,7 +89,7 @@ maintainer:          Kowainik <xrom.xkov@gmail.com>
 copyright:           2016 Stephen Diehl, 2016-2018 Serokell, 2018-2023 Kowainik
 category:            Prelude
 stability:           stable
-build-type:          Simple
+build-type:          Custom
 extra-doc-files:     CHANGELOG.md
                      README.md
 tested-with:         GHC == 8.4.4
@@ -145,6 +145,11 @@ common common-options
                        ScopedTypeVariables
                        TypeApplications
 
+custom-setup
+  setup-depends:
+      base
+    , cabal-doctest >=1.0.9 && <1.1
+
 library
   import:              common-options
   hs-source-dirs:      src
@@ -275,7 +280,7 @@ test-suite relude-doctest
 
   build-depends:       relude
                      , doctest >= 0.20 && < 0.25
-                     , Glob
+                     , base
 
   ghc-options:         -threaded
 
--- a/test/Doctest.hs
+++ b/test/Doctest.hs
@@ -2,17 +2,21 @@ module Main (main) where
 
 import Relude
 
-import System.FilePath.Glob (glob)
+import Build_doctests (flags, pkgs, module_sources)
 import Test.DocTest (doctest)
+import GHC.IO.Encoding (setLocaleEncoding)
+import System.IO (utf8)
 
 main :: IO ()
 main = do
-    sourceFiles <- glob "src/**/*.hs"
-    doctest
-        $ "-XHaskell2010"
-        : "-XInstanceSigs"
-        : "-XNoImplicitPrelude"
-        : "-XOverloadedStrings"
-        : "-XScopedTypeVariables"
-        : "-XTypeApplications"
-        : sourceFiles
+    setLocaleEncoding utf8
+
+    let oldFlags =
+            [ "-XHaskell2010"
+            , "-XInstanceSigs"
+            , "-XNoImplicitPrelude"
+            , "-XOverloadedStrings"
+            , "-XScopedTypeVariables"
+            , "-XTypeApplications" ]
+
+    doctest $ flags ++ oldFlags ++ pkgs ++ module_sources
-- 
2.52.0