From 6240a5697f8dece2f32793093baf6bcba2253e76 Mon Sep 17 00:00:00 2001
From: Ryan Burns <rtburns@protonmail.com>
Date: Sun, 5 Dec 2021 12:59:33 -0800
Subject: [PATCH] mvapich: fix build with gfortran 10

Similar to mpich, there are difficulties preventing fixing the
mismatched arguments upstream.
---
 pkgs/development/libraries/mvapich/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/libraries/mvapich/default.nix b/pkgs/development/libraries/mvapich/default.nix
index c496927ebca..0f358c27962 100644
--- a/pkgs/development/libraries/mvapich/default.nix
+++ b/pkgs/development/libraries/mvapich/default.nix
@@ -40,6 +40,7 @@ stdenv.mkDerivation rec {
     "--enable-threads=multiple"
     "--enable-hybrid"
     "--enable-shared"
+    "FFLAGS=-fallow-argument-mismatch" # fix build with gfortran 10
   ] ++ optional useSlurm "--with-pm=slurm"
     ++ optional (network == "ethernet") "--with-device=ch3:sock"
     ++ optionals (network == "infiniband") [ "--with-device=ch3:mrail" "--with-rdma=gen2" ]