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-rw-r--r--pkgs/development/haskell-modules/generic-builder.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/haskell-modules/generic-builder.nix b/pkgs/development/haskell-modules/generic-builder.nix
index 97a3adaf220..e097fd5af33 100644
--- a/pkgs/development/haskell-modules/generic-builder.nix
+++ b/pkgs/development/haskell-modules/generic-builder.nix
@@ -311,7 +311,7 @@ stdenv.mkDerivation ({
     ${optionalString isGhcjs ''
       for exeDir in "$out/bin/"*.jsexe; do
         exe="''${exeDir%.jsexe}"
-        printf '%s\n' '#!${nodejs}/bin/node' > "$exe"
+        printLines '#!${nodejs}/bin/node' > "$exe"
         cat "$exeDir/all.js" >> "$exe"
         chmod +x "$exe"
       done