diff --git a/pkgs/development/compilers/ghcjs/default.nix b/pkgs/development/compilers/ghcjs/default.nix
index f677cd771229..2c7688190978 100644
--- a/pkgs/development/compilers/ghcjs/default.nix
+++ b/pkgs/development/compilers/ghcjs/default.nix
@@ -97,6 +97,8 @@ in mkDerivation (rec {
       --replace "@CC@"     "${stdenv.cc}/bin/cc"
   '';
   preBuild = ''
+    export HOME="$TMP"
+
     local topDir=$out/lib/ghcjs-${version}
     mkdir -p $topDir