From b8726c346cdb12a1537c94a2f18f46dc822c8e1b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Fri, 7 Jul 2017 10:53:07 +0200
Subject: [PATCH] luajit: switch to 2.0.5 on aarch64 by default

---
 pkgs/development/interpreters/luajit/default.nix | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/interpreters/luajit/default.nix b/pkgs/development/interpreters/luajit/default.nix
index cd47883001b..59ddfde08ae 100644
--- a/pkgs/development/interpreters/luajit/default.nix
+++ b/pkgs/development/interpreters/luajit/default.nix
@@ -1,7 +1,12 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, hostPlatform }:
 rec {
 
-  luajit = luajit_2_1;
+  luajit =
+    # Compatibility problems with lightuserdata pointers; see:
+    # https://github.com/LuaJIT/LuaJIT/blob/v2.1/doc/status.html#L101
+    if hostPlatform.is64bit && (hostPlatform.isArm || hostPlatform.isSunOS)
+      then luajit_2_0
+      else luajit_2_1;
 
   luajit_2_0 = generic {
     version = "2.0.5";