From b18829ff92705a107d7f156e67fdd343061eae33 Mon Sep 17 00:00:00 2001
From: Gabor Greif <ggreif@gmail.com>
Date: Fri, 7 Aug 2020 20:48:14 +0200
Subject: [PATCH] Disable profiling builds for AArch64

see also 1353355a636d6bb2cff5d554a0c6e40861751182
---
 pkgs/development/compilers/ghc/head.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/compilers/ghc/head.nix b/pkgs/development/compilers/ghc/head.nix
index 4b9ff94963dc..67459b146a36 100644
--- a/pkgs/development/compilers/ghc/head.nix
+++ b/pkgs/development/compilers/ghc/head.nix
@@ -28,6 +28,9 @@
 , # If enabled, use -fPIC when compiling static libs.
   enableRelocatedStaticLibs ? stdenv.targetPlatform != stdenv.hostPlatform
 
+  # aarch64 outputs otherwise exceed 2GB limit
+, enableProfiledLibs ? !stdenv.targetPlatform.isAarch64
+
 , # Whether to build dynamic libs for the standard library (on the target
   # platform). Static libs are always built.
   enableShared ? !stdenv.targetPlatform.isWindows && !stdenv.targetPlatform.useiOSPrebuilt
@@ -71,6 +74,8 @@ let
     HADDOCK_DOCS = NO
     BUILD_SPHINX_HTML = NO
     BUILD_SPHINX_PDF = NO
+  '' + stdenv.lib.optionalString (!enableProfiledLibs) ''
+    GhcLibWays = "v dyn"
   '' + stdenv.lib.optionalString enableRelocatedStaticLibs ''
     GhcLibHcOpts += -fPIC
     GhcRtsHcOpts += -fPIC