From 6863853879c9f8bb61ade5c0761cb7dc394f655f Mon Sep 17 00:00:00 2001
From: Charles Strahan <charles.c.strahan@gmail.com>
Date: Sun, 26 Oct 2014 20:13:10 +0000
Subject: [PATCH] fixup gem install flags

---
 pkgs/development/interpreters/ruby/gem.nix | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/interpreters/ruby/gem.nix b/pkgs/development/interpreters/ruby/gem.nix
index dc6f7419a21..ed898b65400 100644
--- a/pkgs/development/interpreters/ruby/gem.nix
+++ b/pkgs/development/interpreters/ruby/gem.nix
@@ -45,8 +45,16 @@ in ruby.stdenv.mkDerivation (attrs // {
   installPhase = ''
     runHook preInstall
     GEM_HOME=$out/${ruby.gemPath} \
-      gem install -p http://nodtd.invalid \
-      --build-root / -n "$out/bin" "$src" $gemFlags -- $buildFlags
+      gem install \
+      --local \
+      --force \
+      --http-proxy "http://nodtd.invalid" \
+      --ignore-dependencies \
+      --build-root "/" \
+      --bindir "$out/bin" \
+      --backtrace \
+      $src $gemFlags -- $buildFlags
+
     rm -frv $out/${ruby.gemPath}/cache # don't keep the .gem file here
 
     for prog in $out/bin/*; do