From 5b00f4037e90d29aa1b4fc297f3e3f0dea2c6b42 Mon Sep 17 00:00:00 2001
From: Guillaume Maudoux <layus.on@gmail.com>
Date: Tue, 30 Aug 2016 10:27:57 +0200
Subject: [PATCH] emacs24: nuke extra references to buildInputs

---
 pkgs/applications/editors/emacs-24/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/applications/editors/emacs-24/default.nix b/pkgs/applications/editors/emacs-24/default.nix
index 7f765b9afc8..05454aaa9c9 100644
--- a/pkgs/applications/editors/emacs-24/default.nix
+++ b/pkgs/applications/editors/emacs-24/default.nix
@@ -44,6 +44,10 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     sed -i 's|/usr/share/locale|${gettext}/share/locale|g' lisp/international/mule-cmds.el
+    # emacs runs then dumps itself. In the process, it keeps a copy of the
+    # PATH env var, holding all the build inputs in it's closure.
+    # Prevent that by running the self-dumping emacs with an empty PATH.
+    sed -i 's|^RUN_TEMACS = |&PATH= |' src/Makefile.in
   '';
 
   buildInputs =