From ea61ed3f2136cb15c08305060b868aa64c6c3658 Mon Sep 17 00:00:00 2001
From: Phillip Seeber <phillip.seeber@uni-jena.de>
Date: Mon, 8 Jul 2024 14:50:19 +0200
Subject: [PATCH] haskellPackages.cpython: pin to python 3.11

---
 pkgs/development/haskell-modules/configuration-common.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index c63ffeebf1bb..7242ce6b0001 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -3103,4 +3103,10 @@ self: super: {
     }
   ) super.push-notify-apn;
 
+  # Python 3.12 breaks unicode C-API. Requires an upstream fix in the CPython
+  # package to support Python > 3.12 API. Thus, should be removed at next CPython
+  # Hackage release.
+  cpython = super.cpython.override {
+    python3 = pkgs.python311;
+  };
 } // import ./configuration-tensorflow.nix {inherit pkgs haskellLib;} self super