etterna: fix build on aarch64-linux (#458263)

pkgs/by-name/bl/blender/package.nix

@@ -207,7 +207,7 @@ stdenv'.mkDerivation (finalAttrs: {
   ++ lib.optional stdenv.cc.isClang "-DPYTHON_LINKFLAGS=" # Clang doesn't support "-export-dynamic"
   ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DLIBDIR=/does-not-exist"
-    "-DSSE2NEON_INCLUDE_DIR=${sse2neon}/lib"
+    "-DSSE2NEON_INCLUDE_DIR=${sse2neon}/include"
   ];
 
   preConfigure = ''

pkgs/by-name/et/etterna/0001-Add-aarch64-linux-support.patch

@@ -0,0 +1,61 @@
+From 778cb2ed0d56614fd06d2129398799e46ff51720 Mon Sep 17 00:00:00 2001
+From: Marcin Serwin <marcin@serwin.dev>
+Date: Mon, 3 Nov 2025 22:25:10 +0100
+Subject: [PATCH] Add aarch64-linux support
+
+Signed-off-by: Marcin Serwin <marcin@serwin.dev>
+---
+ src/Etterna/Models/Misc/StageStats.cpp | 23 +++++++++++++++++++++--
+ 1 file changed, 21 insertions(+), 2 deletions(-)
+
+diff --git a/src/Etterna/Models/Misc/StageStats.cpp b/src/Etterna/Models/Misc/StageStats.cpp
+index 0c70cf25ae..671717505d 100644
+--- a/src/Etterna/Models/Misc/StageStats.cpp
++++ b/src/Etterna/Models/Misc/StageStats.cpp
+@@ -19,8 +19,9 @@
+ #include "Etterna/Singletons/GameManager.h"
+ #include "Etterna/Models/NoteData/NoteDataUtil.h"
+ 
+-#if !( defined(_WIN32) || defined(__APPLE__))
+-	#include <cpuid.h> //We only use cpuid.h on Linux :)
++#if !( defined(_WIN32) || defined(__APPLE__)) \
++    && (defined(__x86_64__) || defined(__i386__))
++	#include <cpuid.h> //We only use cpuid.h on x86 Linux :)
+ #endif
+ 
+ #ifdef _WIN32
+@@ -236,6 +237,8 @@ getCpuHash()
+ 
+ #else  // !DARWIN
+ 
++#if defined(__x86_64__) || defined(__i386__)
++
+ uint16_t
+ getCpuHash()
+ {
+@@ -248,6 +251,22 @@ getCpuHash()
+ 
+ 	return hash;
+ }
++
++#else // !x86
++
++uint16_t
++getCpuHash()
++{
++	// https://www.kernel.org/doc/html/v6.17/arch/arm64/cpu-feature-registers.html
++	uint64_t midr = 0;
++	asm("mrs %0, MIDR_EL1" : "=r"(midr));
++
++	// Only leave implementer, variant, and architecture bits.
++	// See https://developer.arm.com/documentation/ddi0601/2025-09/AArch64-Registers/MIDR-EL1--Main-ID-Register?lang=en
++	return midr >> 16;
++}
++
++#endif // !x86
+ #endif // !DARWIN
+ 
+ std::string
+-- 
+2.51.0
+

pkgs/by-name/et/etterna/package.nix

@@ -27,7 +27,12 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-ZCQt99Qcov/7jGfrSmX9WftaP2U2B1d1APK1mxrUDBs=";
   };
 
-  patches = [ ./fix-download-manager.patch ];
+  patches = [
+    ./fix-download-manager.patch
+
+    # https://github.com/etternagame/etterna/pull/1396
+    ./0001-Add-aarch64-linux-support.patch
+  ];
 
   nativeBuildInputs = [
     cmake
@@ -105,5 +110,9 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ alikindsys ];
     mainProgram = "etterna";
+    platforms = [
+      "x86_64-linux"
+      "aarch64-linux"
+    ];
   };
 })

pkgs/by-name/ss/sse2neon/package.nix

@@ -1,7 +1,6 @@
 {
   lib,
   fetchFromGitHub,
-  pkg-config,
   stdenv,
 }:
 
@@ -16,24 +15,19 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-vb9k+KjiGodVngza0R18LjfPTlsqFbzqXZqefm6KHj0=";
   };
 
-  postPatch = ''
-    # remove warning about gcc < 10
-    substituteInPlace sse2neon.h --replace-fail "#warning \"GCC versions" "// "
-  '';
+  doCheck = true;
 
-  nativeBuildInputs = [ pkg-config ];
+  installPhase = ''
+    runHook preInstall
 
-  dontInstall = true;
-  # use postBuild instead of installPhase, because the build
-  # in itself doesn't produce any ($out) output
-  postBuild = ''
-    mkdir -p $out/lib
-    install -m444 sse2neon.h $out/lib/
+    install -Dm644 sse2neon.h $out/include/sse2neon.h
+
+    runHook postInstall
   '';
 
   meta = {
-    description = "Mono library that provides a GDI+-compatible API on non-Windows operating systems";
-    homepage = "https://www.mono-project.com/docs/gui/libgdiplus/";
+    description = "C/C++ header file that converts Intel SSE intrinsics to Arm/Aarch64 NEON intrinsics";
+    homepage = "https://github.com/DLTcollab/sse2neon";
     platforms = lib.platforms.unix;
     license = lib.licenses.mit;
     maintainers = [ lib.maintainers.gador ];