From 53481f8f0b568b0185a7bd58102452153b827bbe Mon Sep 17 00:00:00 2001
From: Judson <nyarly@gmail.com>
Date: Sat, 10 Jun 2017 16:58:32 -0700
Subject: [PATCH] Docs and extras on tool/

---
 pkgs/development/ruby-modules/tool/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/ruby-modules/tool/default.nix b/pkgs/development/ruby-modules/tool/default.nix
index 04c385d75ae..97158213e10 100644
--- a/pkgs/development/ruby-modules/tool/default.nix
+++ b/pkgs/development/ruby-modules/tool/default.nix
@@ -6,11 +6,13 @@
 , gemdir
   # Exes is the list of executables provided by the gems in the Gemfile
 , exes ? []
-  # Scripts are programs included directly in nixpkgs that depend on gems
+  # Scripts are ruby programs depend on gems in the Gemfile (e.g. scripts/rails)
 , scripts ? []
 , gemfile ? null
 , lockfile ? null
 , gemset ? null
+, preferLocalBuild ? false
+, allowSubstitutes ? false
 , postBuild
 }@args: