From 3268110e849db8014615d2cdc1ef12d38c868b56 Mon Sep 17 00:00:00 2001
From: Bryan Richter <b@chreekat.net>
Date: Thu, 6 Jul 2023 12:02:47 +0300
Subject: [PATCH] Use temp directory for emscriptem cache

As suggested by @doyougnu on #169.
---
 ghc.nix | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/ghc.nix b/ghc.nix
index 6da2916..0de0108 100644
--- a/ghc.nix
+++ b/ghc.nix
@@ -245,9 +245,7 @@ hspkgs.shellFor rec {
       lib.optionalString withEMSDK ''
       unset CC
       CONFIGURE="emconfigure ./configure"
-      cp -Lr ${emscripten}/share/emscripten/cache .emscripten_cache
-      chmod u+rwX -R .emscripten_cache
-      export EM_CACHE=.emscripten_cache
+      export EM_CACHE=$(mktemp -d)
       >&2 echo "N.B. You will need to invoke Hadrian with --bignum=native"
       >&2 echo ""
     ''}