From a956e7bda4ee01e91cc84bd1257aa493b258ac0a Mon Sep 17 00:00:00 2001
From: Louis Bettens <louis@bettens.info>
Date: Tue, 2 Nov 2021 11:31:42 +0100
Subject: [PATCH] python3Packages.blspy: unbreak

---
 pkgs/development/python-modules/blspy/default.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/development/python-modules/blspy/default.nix b/pkgs/development/python-modules/blspy/default.nix
index 1c5363ed7afe86..72ba6c38f847a1 100644
--- a/pkgs/development/python-modules/blspy/default.nix
+++ b/pkgs/development/python-modules/blspy/default.nix
@@ -2,6 +2,7 @@
 , buildPythonPackage
 , fetchPypi
 , fetchFromGitHub
+, fetchpatch
 , setuptools-scm
 , substituteAll
 , cmake
@@ -40,6 +41,12 @@ buildPythonPackage rec {
         fetchSubmodules = true;
       };
     })
+
+    # avoid dynamic linking error at import time
+    (fetchpatch {
+      url = "https://github.com/Chia-Network/bls-signatures/pull/287/commits/797241e9dae1c164c862cbdb38c865d4b124a601.patch";
+      sha256 = "sha256-tlc4aA75gUxt5OaSNZqIlO//PXjmddVgVLYuVEFNmkE=";
+    })
   ];
 
   nativeBuildInputs = [ cmake setuptools-scm ];