From 055ce75a756efcc934a0ee5c2e64d95b1b3013fa Mon Sep 17 00:00:00 2001
From: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>
Date: Wed, 15 Jan 2025 13:16:10 +0100
Subject: [PATCH] Fix MPICH build by fetching upstream patches too

---
 pkgs/overlay.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/overlay.nix b/pkgs/overlay.nix
index a36961b6..5977ab01 100644
--- a/pkgs/overlay.nix
+++ b/pkgs/overlay.nix
@@ -11,7 +11,7 @@ final: prev:
       paths = [ pmix.dev pmix.out ];
     };
   in prev.mpich.overrideAttrs (old: {
-    patches = [
+    patches = (old.patches or []) ++ [
       # See https://github.com/pmodels/mpich/issues/6946
       ./mpich-fix-hwtopo.patch
     ];