From 90320963f49e5105376cb935ae53cb00304bf873 Mon Sep 17 00:00:00 2001
From: Cryolitia PukNgae <Cryolitia@gmail.com>
Date: Wed, 28 Jan 2026 15:19:09 +0800
Subject: [PATCH] fftw: enable neon for aarch64

---
 pkgs/by-name/ff/fftw/package.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/by-name/ff/fftw/package.nix b/pkgs/by-name/ff/fftw/package.nix
index ae56ad4b321c..0d9736335f68 100644
--- a/pkgs/by-name/ff/fftw/package.nix
+++ b/pkgs/by-name/ff/fftw/package.nix
@@ -75,6 +75,11 @@ stdenv.mkDerivation (finalAttrs: {
         "--enable-avx512"
         "--enable-avx128-fma"
       ]
+  ++
+    lib.optionals (stdenv.hostPlatform.isAarch64 && (precision == "single" || precision == "double"))
+      [
+        "--enable-neon"
+      ]
   ++ lib.optionals enableMpi [
     "--enable-mpi"
     # link libfftw3_mpi explicitly with -lmpi