From a84a457f62a86fdc317c9feec50e31c11309c04c Mon Sep 17 00:00:00 2001
From: Yurii Rashkovskii <yrashk@gmail.com>
Date: Wed, 12 Dec 2018 16:12:54 +0700
Subject: [PATCH] luigi: enable local modules discovery

Currently, local module discovery is broken with luigi installed from
this derivation.

In the documentation, you can see the following command line syntax
used:

```
luigi --module module_name ...
```

However, currently this will result in an error:

```
ModuleNotFoundError: No module named 'module_name'
```

However, if the call is prepended with this:

```
PYTHONPATH=.:$PYTHONPATH
```

then it will work as expected.

This patch makes this the default behaviour.
---
 pkgs/applications/networking/cluster/luigi/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/applications/networking/cluster/luigi/default.nix b/pkgs/applications/networking/cluster/luigi/default.nix
index 3a0164edeb04..eea992bc34c7 100644
--- a/pkgs/applications/networking/cluster/luigi/default.nix
+++ b/pkgs/applications/networking/cluster/luigi/default.nix
@@ -19,6 +19,9 @@ python3Packages.buildPythonApplication rec {
   # Requires tox, hadoop, and google cloud
   doCheck = false;
 
+  # This enables accessing modules stored in cwd
+  makeWrapperArgs = ["--prefix PYTHONPATH . :"];
+
   meta = with lib; {
     homepage = https://github.com/spotify/luigi;
     description = "Python package that helps you build complex pipelines of batch jobs";