From eb90f5c08e3741c42655b250c19fcd0243a472b1 Mon Sep 17 00:00:00 2001
From: Matthew Bauer <mjbauer95@gmail.com>
Date: Thu, 14 Jun 2018 22:17:01 -0400
Subject: [PATCH] all-packages: add pkgsCross

---
 pkgs/top-level/all-packages.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d3d40662053e..86b5ee6a8b08 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -31,6 +31,11 @@ with pkgs;
     then pkgsi686Linux.callPackage
     else throw "callPackage_i686 not supported on system '${stdenv.system}'";
 
+  # Useful attribute of systems to cross compile to.
+  pkgsCross = lib.mapAttrs (n: crossSystem:
+              nixpkgsFun { inherit crossSystem; })
+              lib.systems.examples;
+
   # A stdenv capable of building 32-bit binaries.  On x86_64-linux,
   # it uses GCC compiled with multilib support; on i686-linux, it's
   # just the plain stdenv.