From 3ff0594935c935c1e47850f1906d0d8a20f98205 Mon Sep 17 00:00:00 2001
From: sternenseemann <0rpkxez4ksa01gb3typccl0i@systemli.org>
Date: Mon, 30 Aug 2021 12:17:09 +0200
Subject: [PATCH] haskell.compiler.ghc884: remove big-parallel

GHC 8.8.4 seems to be quite susceptible to flaky build failures when
using more cores. Since we don't care about speed too much with this
one, let's disable big-parallel again.
---
 pkgs/development/compilers/ghc/8.8.4.nix | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/pkgs/development/compilers/ghc/8.8.4.nix b/pkgs/development/compilers/ghc/8.8.4.nix
index bb47b1daee47..66862fca7318 100644
--- a/pkgs/development/compilers/ghc/8.8.4.nix
+++ b/pkgs/development/compilers/ghc/8.8.4.nix
@@ -291,10 +291,6 @@ stdenv.mkDerivation (rec {
     # * https://gitlab.haskell.org/ghc/ghc/-/issues/19580
     ++ lib.optional stdenv.targetPlatform.isMusl "pie";
 
-  # big-parallel allows us to build with more than 2 cores on
-  # Hydra which already warrants a significant speedup
-  requiredSystemFeatures = [ "big-parallel" ];
-
   postInstall = ''
     # Install the bash completion file.
     install -D -m 444 utils/completion/ghc.bash $out/share/bash-completion/completions/${targetPrefix}ghc