From 4f88ceff49792d1e57f8af269400e2b7a74d0db5 Mon Sep 17 00:00:00 2001
From: Thomas Tuegel <ttuegel@mailbox.org>
Date: Sat, 22 Jul 2017 19:36:55 -0500
Subject: [PATCH] jam: unset AR

Commit 093cc00cdd9d8cf31ecce5bc1dd3645c460a1b98 sets the AR environment variable
by default, but this causes the jam Makefile to use the wrong command.
---
 pkgs/development/tools/build-managers/jam/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/tools/build-managers/jam/default.nix b/pkgs/development/tools/build-managers/jam/default.nix
index c0d152ee7a2f..7314643530e8 100644
--- a/pkgs/development/tools/build-managers/jam/default.nix
+++ b/pkgs/development/tools/build-managers/jam/default.nix
@@ -10,6 +10,10 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ yacc ];
 
+  preConfigure = ''
+    unset AR
+  '';
+
   buildPhase = ''
     make jam0
     ./jam0 -j$NIX_BUILD_CORES -sBINDIR=$out/bin install