From ee7de87ba1eb94d03a341b84a8181d4a12082cb2 Mon Sep 17 00:00:00 2001
From: Michael Eden <themichaeleden@gmail.com>
Date: Thu, 21 Mar 2019 14:44:47 -0400
Subject: [PATCH] nix: replace build utils with host utils in config.nix

---
 pkgs/tools/package-management/nix/default.nix | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index d725692f40541..fb2587845d4a2 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -9,6 +9,7 @@ let
 
 common =
   { lib, stdenv, fetchurl, fetchpatch, perl, curl, bzip2, sqlite, openssl ? null, xz
+  , bash, coreutils, gzip, gnutar
   , pkgconfig, boehmgc, perlPackages, libsodium, brotli, boost, editline
   , autoreconfHook, autoconf-archive, bison, flex, libxml2, libxslt, docbook5, docbook_xsl_ns
   , busybox-sandbox-shell
@@ -99,6 +100,21 @@ common =
         export TMPDIR=$NIX_BUILD_TOP
       '';
 
+      # substitute build-time binaries with host-binaries
+      preInstall = ''
+        substituteInPlace corepkgs/config.nix.in \
+          --subst-var-by bash ${bash}/bin/bash \
+          --subst-var-by coreutils ${coreutils}/bin \
+          --subst-var-by bzip2 ${bzip2}/bin/bzip2 \
+          --subst-var-by gzip ${gzip}/bin/gzip \
+          --subst-var-by xz ${xz}/bin/xz \
+          --subst-var-by tar ${gnutar}/bin/tar \
+          --subst-var-by tr ${coreutils}/bin/tr
+
+        substituteInPlace scripts/nix-profile.sh.in \
+          --subst-var-by coreutils ${coreutils}/bin
+      '';
+
       separateDebugInfo = stdenv.isLinux;
 
       enableParallelBuilding = true;