From e0ac44ef45212aadb4ef320dfe5560d4b8fa90de Mon Sep 17 00:00:00 2001
From: "Travis A. Everett" <travis.a.everett@gmail.com>
Date: Wed, 27 May 2020 19:04:55 -0500
Subject: [PATCH] findutils: fix undeclared xargs dep on echo

When invoked without a command parameter, xargs runs echo from PATH.
This change patches xargs to use a specific Nix-built echo.
---
 pkgs/tools/misc/findutils/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/tools/misc/findutils/default.nix b/pkgs/tools/misc/findutils/default.nix
index 1b69b80be70f..230e401ef82f 100644
--- a/pkgs/tools/misc/findutils/default.nix
+++ b/pkgs/tools/misc/findutils/default.nix
@@ -11,6 +11,10 @@ stdenv.mkDerivation rec {
     sha256 = "16kqz9yz98dasmj70jwf5py7jk558w96w0vgp3zf9xsqk3gzpzn5";
   };
 
+  postPatch = ''
+    substituteInPlace xargs/xargs.c --replace 'char default_cmd[] = "echo";' 'char default_cmd[] = "${coreutils}/bin/echo";'
+  '';
+
   patches = [
     ./no-install-statedir.patch
   ];