From fad96f62d0380336856bcf8a6328ad905e96dbef Mon Sep 17 00:00:00 2001
From: Samuel Leathers <sam@appliedtrust.com>
Date: Thu, 14 Sep 2017 14:27:48 -0400
Subject: [PATCH 1/2] 3to2: rename py3to2 to work with callPackage

---
 pkgs/top-level/python-packages.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 73e4e79a4bc..e1685dc8339 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -99,6 +99,8 @@ in {
 
   acoustics = callPackage ../development/python-modules/acoustics { };
 
+  py3to2 = callPackage ../development/python-modules/3to2 { };
+  # Left for backwards compatibility
   "3to2" = callPackage ../development/python-modules/3to2 { };
 
   aenum = callPackage ../development/python-modules/aenum { };

From 6ac283b185b3d164b5dcc912fc4b20e7619aeb11 Mon Sep 17 00:00:00 2001
From: Samuel Leathers <sam@appliedtrust.com>
Date: Thu, 14 Sep 2017 14:28:29 -0400
Subject: [PATCH 2/2] arelle: add py3to2 as a buildInput

---
 pkgs/development/python-modules/arelle/default.nix | 3 ++-
 pkgs/top-level/python-packages.nix                 | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/arelle/default.nix b/pkgs/development/python-modules/arelle/default.nix
index 32c020961f2..2cf14192d09 100644
--- a/pkgs/development/python-modules/arelle/default.nix
+++ b/pkgs/development/python-modules/arelle/default.nix
@@ -1,7 +1,7 @@
 { gui ? true,
   buildPythonPackage, fetchFromGitHub, lib,
   sphinx_1_2, lxml, isodate, numpy, pytest,
-  tkinter ? null,
+  tkinter ? null, py3to2,
   ... }:
 
 let
@@ -26,6 +26,7 @@ buildPythonPackage {
   buildInputs = [
     sphinx_1_2
     pytest
+    py3to2
   ];
   propagatedBuildInputs = [
     lxml
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index e1685dc8339..ec4a6cbbb7e 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -101,7 +101,7 @@ in {
 
   py3to2 = callPackage ../development/python-modules/3to2 { };
   # Left for backwards compatibility
-  "3to2" = callPackage ../development/python-modules/3to2 { };
+  "3to2" = self.py3to2;
 
   aenum = callPackage ../development/python-modules/aenum { };