From d8496648265d2c91ad9be42e69c7207d7db279c5 Mon Sep 17 00:00:00 2001
From: Tim Head <betatim@gmail.com>
Date: Wed, 7 Nov 2018 18:51:51 +0100
Subject: [PATCH] Update repo2docker/buildpacks/base.py

Co-Authored-By: nuest <daniel.nuest@wwu.de>
---
 repo2docker/buildpacks/base.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/repo2docker/buildpacks/base.py b/repo2docker/buildpacks/base.py
index 10c7f3ea..128056e4 100644
--- a/repo2docker/buildpacks/base.py
+++ b/repo2docker/buildpacks/base.py
@@ -295,7 +295,7 @@ class BuildPack:
 
         # get paths to the article files from manifest
         files = []
-        if (self.stencila_manifest_dir):
+        if self.stencila_manifest_dir:
             manifest = ET.parse(os.path.join(self.stencila_manifest_dir, 'manifest.xml'))
             files = list(map(lambda x: os.path.join(self.stencila_manifest_dir, x.get('path')), manifest.findall('./documents/document')))
         else: