From 8617a068b8ed7fa77356a518e79a12d37460c0ae Mon Sep 17 00:00:00 2001
From: Lancelot SIX <lsix@lancelotsix.com>
Date: Mon, 31 Oct 2016 16:09:19 +0100
Subject: [PATCH] pythonPackages.mezzanine: Fix template project

This makes sure that the template project can be used and updated.
Otherzise files copied from the store stay readonly and cannot be
updated during the generation process.
---
 .../mezzanine/writable_settings.patch         | 21 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            |  1 +
 2 files changed, 22 insertions(+)
 create mode 100644 pkgs/development/python-modules/mezzanine/writable_settings.patch

diff --git a/pkgs/development/python-modules/mezzanine/writable_settings.patch b/pkgs/development/python-modules/mezzanine/writable_settings.patch
new file mode 100644
index 000000000000..4b5be7b5950c
--- /dev/null
+++ b/pkgs/development/python-modules/mezzanine/writable_settings.patch
@@ -0,0 +1,21 @@
+diff -Nur mezzanine-3.1.10/mezzanine/bin/mezzanine_project.py mezzanine-3.1.10-patched/mezzanine/bin/mezzanine_project.py
+--- mezzanine-3.1.10/mezzanine/bin/mezzanine_project.py	2014-08-30 07:12:19.000000000 +0200
++++ mezzanine-3.1.10-patched/mezzanine/bin/mezzanine_project.py	2016-10-31 14:47:30.982401818 +0100
+@@ -5,6 +5,7 @@
+ from distutils.dir_util import copy_tree
+ from optparse import OptionParser
+ import os
++import stat
+ from shutil import move
+ from uuid import uuid4
+ 
+@@ -61,6 +62,9 @@
+         copy_tree(os.path.join(package_path, "project_template"), project_path)
+         move(local_settings_path + ".template", local_settings_path)
+ 
++    os.chmod(local_settings_path,
++             os.stat(local_settings_path).st_mode | stat.S_IWRITE)
++
+     # Generate a unique SECRET_KEY for the project's setttings module.
+     with open(local_settings_path, "r") as f:
+         data = f.read()
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 71d1092d8f8f..b3077272050d 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -13967,6 +13967,7 @@ in {
       url = "https://github.com/stephenmcd/mezzanine/archive/${version}.tar.gz";
       sha256 = "1cd7d3dji8q4mvcnf9asxn8j109pd5g5d5shr6xvn0iwr35qprgi";
     };
+    patches = [ ../development/python-modules/mezzanine/writable_settings.patch ];
 
     disabled = isPyPy;