1 files changed, 2 insertions, 4 deletions
diff --git a/pkgs/development/libraries/science/math/sympow/default.nix b/pkgs/development/libraries/science/math/sympow/default.nix
index c34701e3f913..f421755b6182 100644
--- a/pkgs/development/libraries/science/math/sympow/default.nix
+++ b/pkgs/development/libraries/science/math/sympow/default.nix
@@ -34,13 +34,11 @@ stdenv.mkDerivation rec {
     makeWrapper "$out/share/sympow/sympow" "$out/bin/sympow" \
       --run 'export SYMPOW_LOCAL="$HOME/.local/share/sympow"' \
       --run 'if [ ! -d "$SYMPOW_LOCAL" ]; then
-        mkdir -p "$SYMPOW_LOCAL"
-        cp -r @out@/share/sympow/* "$SYMPOW_LOCAL"
+        mkdir -p "$SYMPOW_LOCAL" 
+        cp -r ${placeholder "out"}/share/sympow/* "$SYMPOW_LOCAL"
         chmod -R +xw "$SYMPOW_LOCAL"
     fi' \
       --run 'cd "$SYMPOW_LOCAL"'
-    substituteInPlace $out/bin/sympow --subst-var out
-
     runHook postInstall
   '';