From 7fa0befcc7d495ae3dc193559c1418c0b1efa09f Mon Sep 17 00:00:00 2001
From: Joe Hermaszewski <git@monoid.al>
Date: Sat, 1 Dec 2018 09:38:42 +0800
Subject: [PATCH] ghc-8.4: fix build targeting arm

Fixes https://ghc.haskell.org/trac/ghc/ticket/15780
---
 pkgs/development/compilers/ghc/8.4.4.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/compilers/ghc/8.4.4.nix b/pkgs/development/compilers/ghc/8.4.4.nix
index 32a9095e1238..901582b7a924 100644
--- a/pkgs/development/compilers/ghc/8.4.4.nix
+++ b/pkgs/development/compilers/ghc/8.4.4.nix
@@ -109,7 +109,11 @@ stdenv.mkDerivation (rec {
       name = "D4388.diff";
       sha256 = "0w6sdcvnqjlnlzpvnzw20b80v150ijjyjvs9548ildc1928j0w7s";
     })
-    ++ stdenv.lib.optional stdenv.isDarwin ./backport-dylib-command-size-limit.patch;
+    ++ stdenv.lib.optional stdenv.isDarwin ./backport-dylib-command-size-limit.patch
+    ++ stdenv.lib.optional (targetPlatform.isAarch32 || targetPlatform.isAarch64) (fetchpatch {
+      url = "https://git.haskell.org/ghc.git/patch/d8495549ba9d194815c2d0eaee6797fc7c00756a";
+      sha256 = "1czx12qcl088vjn7mqxvyja4b2ia2n09c28br8c777fd0xk069pm";
+    });
 
   postPatch = "patchShebangs .";