Fix evaluation error

http://hydra.nixos.org/build/10697257
2014-04-29 20:40:28 +02:00 · 2014-04-29 20:40:28 +02:00 · fe4bc3cc80
commit fe4bc3cc80
parent b802924af1
1 changed files with 1 additions and 1 deletions
--- a/pkgs/applications/science/math/sage/default.nix
+++ b/pkgs/applications/science/math/sage/default.nix
@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
  preConfigure = ''
    export SAGE_NUM_THREADS=$NIX_BUILD_CORES
    sed -i 's/if ! [ -d "$HOME" ]/if [ -d "$HOME" ]/' src/bin/sage-env
-  '' ++ stdenv.lib.optionalString stdenv.isDarwin ''
+  '' + stdenv.lib.optionalString stdenv.isDarwin ''
    sed -i "s/ld_version = try_run('ld  -v')/ld_version = 'Apple'/" \
      build/pkgs/atlas/configuration.py
  '';