From d1de348fdc0055e7abe86f90d65abc939f39440e Mon Sep 17 00:00:00 2001
From: "(cdep)illabout" <cdep.illabout@gmail.com>
Date: Sun, 16 May 2021 16:52:08 +0900
Subject: [PATCH] haskell.compiler.ghcHEAD: mark broken on aarch64

---
 pkgs/development/compilers/ghc/head.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/compilers/ghc/head.nix b/pkgs/development/compilers/ghc/head.nix
index 74e03550255..60371ec5a1b 100644
--- a/pkgs/development/compilers/ghc/head.nix
+++ b/pkgs/development/compilers/ghc/head.nix
@@ -258,7 +258,10 @@ stdenv.mkDerivation (rec {
     homepage = "http://haskell.org/ghc";
     description = "The Glasgow Haskell Compiler";
     maintainers = with lib.maintainers; [ marcweber andres peti ];
-    inherit (ghc.meta) license platforms;
+    inherit (ghc.meta) license;
+    # GHC-HEAD does not appear to compile on aarch64.
+    broken = stdenv.isAarch64;
+    platforms = builtins.filter (p: p != "aarch64-linux") ghc.meta.platforms;
   };
 
   dontStrip = (targetPlatform.useAndroidPrebuilt || targetPlatform.isWasm);