From 98f452602285c3f5e6927554e31d9f49651d5e1e Mon Sep 17 00:00:00 2001
From: Matthew Bauer <mjbauer95@gmail.com>
Date: Mon, 3 Jun 2019 19:52:22 -0400
Subject: [PATCH] emacsMac: use llvm6 to build

for unclear reasons, using llvm7 crashes emacs macport. llvm6 seems to
work fine.

Fixes #61596
---
 pkgs/top-level/all-packages.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 4f89abd88584..b9f74c60d7d7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -17364,6 +17364,7 @@ in
     inherit (darwin.apple_sdk.frameworks)
       AppKit Carbon Cocoa IOKit OSAKit Quartz QuartzCore WebKit
       ImageCaptureCore GSS ImageIO;
+    stdenv = if stdenv.cc.isClang then llvmPackages_6.stdenv else stdenv;
   };
 
   emacsPackagesFor = emacs: self: let callPackage = newScope self; in rec {