From f1a14f98446c0d65152542eb1196c4112cce843a Mon Sep 17 00:00:00 2001
From: Matthew Bauer <mjbauer95@gmail.com>
Date: Sun, 8 Jul 2018 19:23:10 -0400
Subject: [PATCH] unixtools: link instead of copying

This is better for disk space.
---
 pkgs/top-level/unix-tools.nix | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/pkgs/top-level/unix-tools.nix b/pkgs/top-level/unix-tools.nix
index 3f8fdf7d888..52c3de3166f 100644
--- a/pkgs/top-level/unix-tools.nix
+++ b/pkgs/top-level/unix-tools.nix
@@ -22,16 +22,19 @@ let
     in runCommand "${cmd}-${version}" {
       meta.platforms = map (n: { kernel.name = n; }) (attrNames providers);
       passthru = { inherit provider; };
+      preferLocalBuild = true;
     } ''
-      if ! [ -x "${bin}" ]; then
-        echo "Cannot find command ${cmd}"
+      if ! [ -x ${bin} ]; then
+        echo Cannot find command ${cmd}
         exit 1
       fi
 
-      install -D "${bin}" "$out/bin/${cmd}"
+      mkdir -p $out/bin
+      ln -s ${bin} $out/bin/${cmd}
 
-      if [ -f "${manpage}" ]; then
-        install -D "${manpage}" $out/share/man/man1/${cmd}.1.gz
+      if [ -f ${manpage} ]; then
+        mkdir -p $out/share/man/man1
+        ln -s ${manpage} $out/share/man/man1/${cmd}.1.gz
       fi
     '';